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Text.asm
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Text.asm
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;; TEXT ROUTINES
;;===========================================================================
;; TXT INITIALISE
TXT_INITIALISE: ;{{Addr=$1074 Code Calls/jump count: 1 Data use count: 1}}
call TXT_RESET ;{{1074:cd8410}} ; TXT RESET
xor a ;{{1077:af}}
ld (UDG_matrix_table_flag_),a;{{1078:3235b7}}
ld hl,$0001 ;{{107b:210100}} ##LIT##;WARNING: Code area used as literal
call initialise_a_stream;{{107e:cd3911}}
jp clear_txt_streams_area;{{1081:c39f10}}
;;===========================================================================
;; TXT RESET
TXT_RESET: ;{{Addr=$1084 Code Calls/jump count: 2 Data use count: 1}}
ld hl,_txt_reset_3 ;{{1084:218d10}} ; table used to initialise text vdu indirections
call initialise_firmware_indirections;{{1087:cdb40a}} ; initialise text vdu indirections
jp initialise_control_code_functions;{{108a:c36414}} ; initialise control code handler functions
_txt_reset_3: ;{{Addr=$108d Data Calls/jump count: 0 Data use count: 1}}
defb $f
defw TXT_DRAW_CURSOR
jp IND_TXT_UNDRAW_CURSOR ; IND: TXT DRAW CURSOR
jp IND_TXT_UNDRAW_CURSOR; IND: TXT UNDRAW CURSOR
jp IND_TXT_WRITE_CHAR; IND: TXT WRITE CHAR
jp IND_TXT_UNWRITE ; IND: TXT UNWRITE
jp IND_TXT_OUT_ACTION; IND: TXT OUT ACTION
;;===========================================================================
;; clear txt streams area?
clear_txt_streams_area: ;{{Addr=$109f Code Calls/jump count: 1 Data use count: 0}}
ld a,$08 ;{{109f:3e08}}
ld de,RAM_b6b6 ;{{10a1:11b6b6}}
_clear_txt_streams_area_2: ;{{Addr=$10a4 Code Calls/jump count: 1 Data use count: 0}}
ld hl,Current_Stream_;{{10a4:2126b7}}
ld bc,$000e ;{{10a7:010e00}} ##LIT##;WARNING: Code area used as literal
ldir ;{{10aa:edb0}}
dec a ;{{10ac:3d}}
jr nz,_clear_txt_streams_area_2;{{10ad:20f5}} (-&0b)
ld (current_stream_number),a;{{10af:32b5b6}}
ret ;{{10b2:c9}}
;;==================================================================================
;; clean up streams?
clean_up_streams: ;{{Addr=$10b3 Code Calls/jump count: 1 Data use count: 0}}
ld a,(current_stream_number);{{10b3:3ab5b6}}
ld c,a ;{{10b6:4f}}
ld b,$08 ;{{10b7:0608}}
_clean_up_streams_3: ;{{Addr=$10b9 Code Calls/jump count: 1 Data use count: 0}}
ld a,b ;{{10b9:78}}
dec a ;{{10ba:3d}}
call TXT_STR_SELECT ;{{10bb:cde410}} TXT STR SELECT
call TXT_UNDRAW_CURSOR ;{{10be:cdd0bd}} IND: TXT UNDRAW CURSOR
call TXT_GET_PAPER ;{{10c1:cdc012}} TXT GET PAPER
ld (current_PAPER_number_),a;{{10c4:3230b7}}
call TXT_GET_PEN ;{{10c7:cdba12}} TXT GET PEN
ld (current_PEN_number_),a;{{10ca:322fb7}}
djnz _clean_up_streams_3;{{10cd:10ea}} (-&16)
ld a,c ;{{10cf:79}}
ret ;{{10d0:c9}}
;;==================================================================================
;; initialise txt streams
initialise_txt_streams: ;{{Addr=$10d1 Code Calls/jump count: 1 Data use count: 0}}
ld c,a ;{{10d1:4f}}
ld b,$08 ;{{10d2:0608}}
_initialise_txt_streams_2: ;{{Addr=$10d4 Code Calls/jump count: 1 Data use count: 0}}
ld a,b ;{{10d4:78}}
dec a ;{{10d5:3d}}
call TXT_STR_SELECT ;{{10d6:cde410}} TXT STR SELECT
push bc ;{{10d9:c5}}
ld hl,(current_PEN_number_);{{10da:2a2fb7}}
call initialise_a_stream;{{10dd:cd3911}}
pop bc ;{{10e0:c1}}
djnz _initialise_txt_streams_2;{{10e1:10f1}} (-&0f)
ld a,c ;{{10e3:79}}
;;==================================================================================
;; TXT STR SELECT
TXT_STR_SELECT: ;{{Addr=$10e4 Code Calls/jump count: 4 Data use count: 1}}
and $07 ;{{10e4:e607}}
ld hl,current_stream_number;{{10e6:21b5b6}}
cp (hl) ;{{10e9:be}}
ret z ;{{10ea:c8}}
push bc ;{{10eb:c5}}
push de ;{{10ec:d5}}
ld c,(hl) ;{{10ed:4e}}
ld (hl),a ;{{10ee:77}}
ld b,a ;{{10ef:47}}
ld a,c ;{{10f0:79}}
call _txt_swap_streams_19;{{10f1:cd2611}}
call _txt_swap_streams_14;{{10f4:cd1e11}}
ld a,b ;{{10f7:78}}
call _txt_swap_streams_19;{{10f8:cd2611}}
ex de,hl ;{{10fb:eb}}
call _txt_swap_streams_14;{{10fc:cd1e11}}
ld a,c ;{{10ff:79}}
pop de ;{{1100:d1}}
pop bc ;{{1101:c1}}
ret ;{{1102:c9}}
;;===========================================================================
;; TXT SWAP STREAMS
TXT_SWAP_STREAMS: ;{{Addr=$1103 Code Calls/jump count: 0 Data use count: 1}}
ld a,(current_stream_number);{{1103:3ab5b6}}
push af ;{{1106:f5}}
ld a,c ;{{1107:79}}
call TXT_STR_SELECT ;{{1108:cde410}}
ld a,b ;{{110b:78}}
ld (current_stream_number),a;{{110c:32b5b6}}
call _txt_swap_streams_19;{{110f:cd2611}}
push de ;{{1112:d5}}
ld a,c ;{{1113:79}}
call _txt_swap_streams_19;{{1114:cd2611}}
pop hl ;{{1117:e1}}
call _txt_swap_streams_14;{{1118:cd1e11}}
pop af ;{{111b:f1}}
jr TXT_STR_SELECT ;{{111c:18c6}} (-&3a)
;;--------------------------------------------------------------
_txt_swap_streams_14: ;{{Addr=$111e Code Calls/jump count: 3 Data use count: 0}}
push bc ;{{111e:c5}}
ld bc,$000e ;{{111f:010e00}} ##LIT##;WARNING: Code area used as literal
ldir ;{{1122:edb0}}
pop bc ;{{1124:c1}}
ret ;{{1125:c9}}
;;--------------------------------------------------------------
_txt_swap_streams_19: ;{{Addr=$1126 Code Calls/jump count: 4 Data use count: 0}}
and $07 ;{{1126:e607}}
ld e,a ;{{1128:5f}}
add a,a ;{{1129:87}}
add a,e ;{{112a:83}}
add a,a ;{{112b:87}}
add a,e ;{{112c:83}}
add a,a ;{{112d:87}}
add a,$b6 ;{{112e:c6b6}}
ld e,a ;{{1130:5f}}
adc a,$b6 ;{{1131:ceb6}}
sub e ;{{1133:93}}
ld d,a ;{{1134:57}}
ld hl,Current_Stream_;{{1135:2126b7}}
ret ;{{1138:c9}}
;;===========================================================================
;; initialise a stream??
initialise_a_stream: ;{{Addr=$1139 Code Calls/jump count: 2 Data use count: 0}}
ex de,hl ;{{1139:eb}}
ld a,$83 ;{{113a:3e83}}
ld (cursor_flag_),a ;{{113c:322eb7}}
ld a,d ;{{113f:7a}}
call TXT_SET_PAPER ;{{1140:cdab12}} TXT SET PAPER
ld a,e ;{{1143:7b}}
call TXT_SET_PEN_ ;{{1144:cda612}} TXT SET PEN
xor a ;{{1147:af}}
call TXT_SET_GRAPHIC ;{{1148:cda813}} TXT SET GRAPHIC
call TXT_SET_BACK ;{{114b:cd7b13}} TXT SET BACK
ld hl,$0000 ;{{114e:210000}} ##LIT##;WARNING: Code area used as literal
ld de,$7f7f ;{{1151:117f7f}}
call TXT_WIN_ENABLE ;{{1154:cd0812}} TXT WIN ENABLE
jp TXT_VDU_ENABLE ;{{1157:c35914}} TXT VDU ENABLE
;;===========================================================================
;; TXT SET COLUMN
TXT_SET_COLUMN: ;{{Addr=$115a Code Calls/jump count: 1 Data use count: 1}}
dec a ;{{115a:3d}}
ld hl,window_left_column_;{{115b:212ab7}}
add a,(hl) ;{{115e:86}}
ld hl,(Current_Stream_);{{115f:2a26b7}}
ld h,a ;{{1162:67}}
jr _txt_set_cursor_1 ;{{1163:180e}} ; undraw cursor, set cursor position and draw it
;;===========================================================================
;; TXT SET ROW
TXT_SET_ROW: ;{{Addr=$1165 Code Calls/jump count: 0 Data use count: 1}}
dec a ;{{1165:3d}}
ld hl,window_top_line_;{{1166:2129b7}}
add a,(hl) ;{{1169:86}}
ld hl,(Current_Stream_);{{116a:2a26b7}}
ld l,a ;{{116d:6f}}
jr _txt_set_cursor_1 ;{{116e:1803}} ; undraw cursor, set cursor position and draw it
;;===========================================================================
;; TXT SET CURSOR
TXT_SET_CURSOR: ;{{Addr=$1170 Code Calls/jump count: 7 Data use count: 1}}
call _txt_get_cursor_4 ;{{1170:cd8611}}
;; undraw cursor, set cursor position and draw it
_txt_set_cursor_1: ;{{Addr=$1173 Code Calls/jump count: 4 Data use count: 0}}
call TXT_UNDRAW_CURSOR ;{{1173:cdd0bd}} IND: TXT UNDRAW CURSOR
;; set cursor position and draw it
_txt_set_cursor_2: ;{{Addr=$1176 Code Calls/jump count: 1 Data use count: 0}}
ld (Current_Stream_),hl;{{1176:2226b7}}
jp TXT_DRAW_CURSOR ;{{1179:c3cdbd}} IND: TXT DRAW CURSOR
;;===========================================================================
;; TXT GET CURSOR
TXT_GET_CURSOR: ;{{Addr=$117c Code Calls/jump count: 16 Data use count: 1}}
ld hl,(Current_Stream_);{{117c:2a26b7}}
call _txt_get_cursor_13;{{117f:cd9311}}
ld a,(scroll_count) ;{{1182:3a2db7}}
ret ;{{1185:c9}}
;;----------------------------------------------------------------
_txt_get_cursor_4: ;{{Addr=$1186 Code Calls/jump count: 2 Data use count: 0}}
ld a,(window_top_line_);{{1186:3a29b7}}
dec a ;{{1189:3d}}
add a,l ;{{118a:85}}
ld l,a ;{{118b:6f}}
ld a,(window_left_column_);{{118c:3a2ab7}}
dec a ;{{118f:3d}}
add a,h ;{{1190:84}}
ld h,a ;{{1191:67}}
ret ;{{1192:c9}}
;;------------------------------------------------------------------
_txt_get_cursor_13: ;{{Addr=$1193 Code Calls/jump count: 2 Data use count: 0}}
ld a,(window_top_line_);{{1193:3a29b7}}
sub l ;{{1196:95}}
cpl ;{{1197:2f}}
inc a ;{{1198:3c}}
inc a ;{{1199:3c}}
ld l,a ;{{119a:6f}}
ld a,(window_left_column_);{{119b:3a2ab7}}
sub h ;{{119e:94}}
cpl ;{{119f:2f}}
inc a ;{{11a0:3c}}
inc a ;{{11a1:3c}}
ld h,a ;{{11a2:67}}
ret ;{{11a3:c9}}
;;====================================================================
;; scroll window?
scroll_window: ;{{Addr=$11a4 Code Calls/jump count: 8 Data use count: 0}}
call TXT_UNDRAW_CURSOR ;{{11a4:cdd0bd}} ; IND: TXT UNDRAW CURSOR
;;--------------------------------------------------------------------
_scroll_window_1: ;{{Addr=$11a7 Code Calls/jump count: 1 Data use count: 0}}
ld hl,(Current_Stream_);{{11a7:2a26b7}}
call _txt_validate_6 ;{{11aa:cdd611}}
ld (Current_Stream_),hl;{{11ad:2226b7}}
ret c ;{{11b0:d8}}
push hl ;{{11b1:e5}}
ld hl,scroll_count ;{{11b2:212db7}}
ld a,b ;{{11b5:78}}
add a,a ;{{11b6:87}}
inc a ;{{11b7:3c}}
add a,(hl) ;{{11b8:86}}
ld (hl),a ;{{11b9:77}}
call TXT_GET_WINDOW ;{{11ba:cd5212}} ; TXT GET WINDOW
ld a,(current_PAPER_number_);{{11bd:3a30b7}}
push af ;{{11c0:f5}}
call c,SCR_SW_ROLL ;{{11c1:dc440e}} ; SCR SW ROLL
pop af ;{{11c4:f1}}
call nc,SCR_HW_ROLL ;{{11c5:d4000e}} ; SCR HW ROLL
pop hl ;{{11c8:e1}}
ret ;{{11c9:c9}}
;;===========================================================================
;; TXT VALIDATE
TXT_VALIDATE: ;{{Addr=$11ca Code Calls/jump count: 8 Data use count: 1}}
call _txt_get_cursor_4 ;{{11ca:cd8611}}
call _txt_validate_6 ;{{11cd:cdd611}}
push af ;{{11d0:f5}}
call _txt_get_cursor_13;{{11d1:cd9311}}
pop af ;{{11d4:f1}}
ret ;{{11d5:c9}}
;;------------------------------------------------------------------
_txt_validate_6: ;{{Addr=$11d6 Code Calls/jump count: 2 Data use count: 0}}
ld a,(window_right_colwnn_);{{11d6:3a2cb7}}
cp h ;{{11d9:bc}}
jp p,_txt_validate_12;{{11da:f2e211}}
ld a,(window_left_column_);{{11dd:3a2ab7}}
ld h,a ;{{11e0:67}}
inc l ;{{11e1:2c}}
_txt_validate_12: ;{{Addr=$11e2 Code Calls/jump count: 1 Data use count: 0}}
ld a,(window_left_column_);{{11e2:3a2ab7}}
dec a ;{{11e5:3d}}
cp h ;{{11e6:bc}}
jp m,_txt_validate_19;{{11e7:faef11}}
ld a,(window_right_colwnn_);{{11ea:3a2cb7}}
ld h,a ;{{11ed:67}}
dec l ;{{11ee:2d}}
_txt_validate_19: ;{{Addr=$11ef Code Calls/jump count: 1 Data use count: 0}}
ld a,(window_top_line_);{{11ef:3a29b7}}
dec a ;{{11f2:3d}}
cp l ;{{11f3:bd}}
jp p,_txt_validate_31;{{11f4:f20212}}
ld a,(window_bottom_line_);{{11f7:3a2bb7}}
cp l ;{{11fa:bd}}
scf ;{{11fb:37}}
ret p ;{{11fc:f0}}
ld l,a ;{{11fd:6f}}
ld b,$ff ;{{11fe:06ff}}
or a ;{{1200:b7}}
ret ;{{1201:c9}}
;;------------------------------------------------------------------
_txt_validate_31: ;{{Addr=$1202 Code Calls/jump count: 1 Data use count: 0}}
inc a ;{{1202:3c}}
ld l,a ;{{1203:6f}}
ld b,$00 ;{{1204:0600}}
or a ;{{1206:b7}}
ret ;{{1207:c9}}
;;===========================================================================
;; TXT WIN ENABLE
TXT_WIN_ENABLE: ;{{Addr=$1208 Code Calls/jump count: 2 Data use count: 1}}
call SCR_CHAR_LIMITS ;{{1208:cd5d0b}} ; SCR CHAR LIMITS
ld a,h ;{{120b:7c}}
call _txt_win_enable_33;{{120c:cd4012}}
ld h,a ;{{120f:67}}
ld a,d ;{{1210:7a}}
call _txt_win_enable_33;{{1211:cd4012}}
ld d,a ;{{1214:57}}
cp h ;{{1215:bc}}
jr nc,_txt_win_enable_11;{{1216:3002}} (+&02)
ld d,h ;{{1218:54}}
ld h,a ;{{1219:67}}
_txt_win_enable_11: ;{{Addr=$121a Code Calls/jump count: 1 Data use count: 0}}
ld a,l ;{{121a:7d}}
call _txt_win_enable_40;{{121b:cd4912}}
ld l,a ;{{121e:6f}}
ld a,e ;{{121f:7b}}
call _txt_win_enable_40;{{1220:cd4912}}
ld e,a ;{{1223:5f}}
cp l ;{{1224:bd}}
jr nc,_txt_win_enable_21;{{1225:3002}} (+&02)
ld e,l ;{{1227:5d}}
ld l,a ;{{1228:6f}}
_txt_win_enable_21: ;{{Addr=$1229 Code Calls/jump count: 1 Data use count: 0}}
ld (window_top_line_),hl;{{1229:2229b7}}
ld (window_bottom_line_),de;{{122c:ed532bb7}}
ld a,h ;{{1230:7c}}
or l ;{{1231:b5}}
jr nz,_txt_win_enable_31;{{1232:2006}} (+&06)
ld a,d ;{{1234:7a}}
xor b ;{{1235:a8}}
jr nz,_txt_win_enable_31;{{1236:2002}} (+&02)
ld a,e ;{{1238:7b}}
xor c ;{{1239:a9}}
_txt_win_enable_31: ;{{Addr=$123a Code Calls/jump count: 2 Data use count: 0}}
ld (RAM_b728),a ;{{123a:3228b7}}
jp _txt_set_cursor_1 ;{{123d:c37311}} ; undraw cursor, set cursor position and draw it
;;------------------------------------------------------------------
_txt_win_enable_33: ;{{Addr=$1240 Code Calls/jump count: 2 Data use count: 0}}
or a ;{{1240:b7}}
jp p,_txt_win_enable_36;{{1241:f24512}}
xor a ;{{1244:af}}
_txt_win_enable_36: ;{{Addr=$1245 Code Calls/jump count: 1 Data use count: 0}}
cp b ;{{1245:b8}}
ret c ;{{1246:d8}}
ld a,b ;{{1247:78}}
ret ;{{1248:c9}}
_txt_win_enable_40: ;{{Addr=$1249 Code Calls/jump count: 2 Data use count: 0}}
or a ;{{1249:b7}}
jp p,_txt_win_enable_43;{{124a:f24e12}}
xor a ;{{124d:af}}
_txt_win_enable_43: ;{{Addr=$124e Code Calls/jump count: 1 Data use count: 0}}
cp c ;{{124e:b9}}
ret c ;{{124f:d8}}
ld a,c ;{{1250:79}}
ret ;{{1251:c9}}
;;===========================================================================
;; TXT GET WINDOW
TXT_GET_WINDOW: ;{{Addr=$1252 Code Calls/jump count: 3 Data use count: 1}}
ld hl,(window_top_line_);{{1252:2a29b7}}
ld de,(window_bottom_line_);{{1255:ed5b2bb7}}
ld a,(RAM_b728) ;{{1259:3a28b7}}
add a,$ff ;{{125c:c6ff}}
ret ;{{125e:c9}}
;;===========================================================================
;; IND: TXT UNDRAW CURSOR
IND_TXT_UNDRAW_CURSOR: ;{{Addr=$125f Code Calls/jump count: 2 Data use count: 0}}
ld a,(cursor_flag_) ;{{125f:3a2eb7}}
and $03 ;{{1262:e603}}
ret nz ;{{1264:c0}}
;;===========================================================================
;; TXT PLACE CURSOR
;; TXT REMOVE CURSOR
TXT_PLACE_CURSOR: ;{{Addr=$1265 Code Calls/jump count: 1 Data use count: 4}}
push bc ;{{1265:c5}}
push de ;{{1266:d5}}
push hl ;{{1267:e5}}
call _scroll_window_1 ;{{1268:cda711}}
ld bc,(current_PEN_number_);{{126b:ed4b2fb7}}
call SCR_CHAR_INVERT ;{{126f:cde50d}} ; SCR CHAR INVERT
pop hl ;{{1272:e1}}
pop de ;{{1273:d1}}
pop bc ;{{1274:c1}}
ret ;{{1275:c9}}
;;===========================================================================
;; TXT CUR ON
TXT_CUR_ON: ;{{Addr=$1276 Code Calls/jump count: 2 Data use count: 1}}
push af ;{{1276:f5}}
ld a,$fd ;{{1277:3efd}}
call _txt_cur_enable_1 ;{{1279:cd8812}}
pop af ;{{127c:f1}}
ret ;{{127d:c9}}
;;===========================================================================
;; TXT CUR OFF
TXT_CUR_OFF: ;{{Addr=$127e Code Calls/jump count: 2 Data use count: 1}}
push af ;{{127e:f5}}
ld a,$02 ;{{127f:3e02}}
call _txt_cur_disable_1;{{1281:cd9912}}
pop af ;{{1284:f1}}
ret ;{{1285:c9}}
;;===========================================================================
;; TXT CUR ENABLE
TXT_CUR_ENABLE: ;{{Addr=$1286 Code Calls/jump count: 0 Data use count: 2}}
ld a,$fe ;{{1286:3efe}}
;;---------------------------------------------------------------------------
_txt_cur_enable_1: ;{{Addr=$1288 Code Calls/jump count: 2 Data use count: 0}}
push af ;{{1288:f5}}
call TXT_UNDRAW_CURSOR ;{{1289:cdd0bd}} ; IND: TXT UNDRAW CURSOR
pop af ;{{128c:f1}}
push hl ;{{128d:e5}}
ld hl,cursor_flag_ ;{{128e:212eb7}}
and (hl) ;{{1291:a6}}
ld (hl),a ;{{1292:77}}
pop hl ;{{1293:e1}}
jp TXT_DRAW_CURSOR ;{{1294:c3cdbd}} ; IND: TXT DRAW CURSOR
;;===========================================================================
;; TXT CUR DISABLE
TXT_CUR_DISABLE: ;{{Addr=$1297 Code Calls/jump count: 0 Data use count: 2}}
ld a,$01 ;{{1297:3e01}}
;;---------------------------------------------------------------------------
_txt_cur_disable_1: ;{{Addr=$1299 Code Calls/jump count: 2 Data use count: 0}}
push af ;{{1299:f5}}
call TXT_UNDRAW_CURSOR ;{{129a:cdd0bd}} ; IND: TXT UNDRAW CURSOR
pop af ;{{129d:f1}}
push hl ;{{129e:e5}}
ld hl,cursor_flag_ ;{{129f:212eb7}}
or (hl) ;{{12a2:b6}}
ld (hl),a ;{{12a3:77}}
pop hl ;{{12a4:e1}}
ret ;{{12a5:c9}}
;;===========================================================================
;; TXT SET PEN
TXT_SET_PEN_: ;{{Addr=$12a6 Code Calls/jump count: 1 Data use count: 2}}
ld hl,current_PEN_number_;{{12a6:212fb7}}
jr _txt_set_paper_1 ;{{12a9:1803}} (+&03)
;;===========================================================================
;; TXT SET PAPER
TXT_SET_PAPER: ;{{Addr=$12ab Code Calls/jump count: 1 Data use count: 2}}
ld hl,current_PAPER_number_;{{12ab:2130b7}}
;;---------------------------------------------------------------------------
_txt_set_paper_1: ;{{Addr=$12ae Code Calls/jump count: 1 Data use count: 0}}
push af ;{{12ae:f5}}
call TXT_UNDRAW_CURSOR ;{{12af:cdd0bd}} ; IND: TXT UNDRAW CURSOR
pop af ;{{12b2:f1}}
call SCR_INK_ENCODE ;{{12b3:cd8e0c}} ; SCR INK ENCODE
ld (hl),a ;{{12b6:77}}
_txt_set_paper_6: ;{{Addr=$12b7 Code Calls/jump count: 1 Data use count: 0}}
jp TXT_DRAW_CURSOR ;{{12b7:c3cdbd}} ; IND: TXT DRAW CURSOR
;;===========================================================================
;; TXT GET PEN
TXT_GET_PEN: ;{{Addr=$12ba Code Calls/jump count: 1 Data use count: 1}}
ld a,(current_PEN_number_);{{12ba:3a2fb7}}
jp SCR_INK_DECODE ;{{12bd:c3a70c}} SCR INK DECODE
;;===========================================================================
;; TXT GET PAPER
TXT_GET_PAPER: ;{{Addr=$12c0 Code Calls/jump count: 1 Data use count: 1}}
ld a,(current_PAPER_number_);{{12c0:3a30b7}}
jp SCR_INK_DECODE ;{{12c3:c3a70c}} SCR INK DECODE
;;===========================================================================
;; TXT INVERSE
TXT_INVERSE: ;{{Addr=$12c6 Code Calls/jump count: 0 Data use count: 2}}
call TXT_UNDRAW_CURSOR ;{{12c6:cdd0bd}} ; IND: TXT UNDRAW CURSOR
ld hl,(current_PEN_number_);{{12c9:2a2fb7}}
ld a,h ;{{12cc:7c}}
ld h,l ;{{12cd:65}}
ld l,a ;{{12ce:6f}}
ld (current_PEN_number_),hl;{{12cf:222fb7}}
jr _txt_set_paper_6 ;{{12d2:18e3}} (-&1d)
;;===========================================================================
;; TXT GET MATRIX
TXT_GET_MATRIX: ;{{Addr=$12d4 Code Calls/jump count: 5 Data use count: 1}}
push de ;{{12d4:d5}}
ld e,a ;{{12d5:5f}}
call TXT_GET_M_TABLE ;{{12d6:cd2b13}} TXT GET M TABLE
jr nc,get_font_glyph_address;{{12d9:3009}} get pointer to character graphics
ld d,a ;{{12db:57}}
ld a,e ;{{12dc:7b}}
sub d ;{{12dd:92}}
ccf ;{{12de:3f}}
jr nc,get_font_glyph_address;{{12df:3003}} get pointer to character graphics
ld e,a ;{{12e1:5f}}
jr _get_font_glyph_address_1;{{12e2:1803}} (+&03)
;;=============================================================
;; get font glyph address
;;
;; Entry conditions:
;; A = character code
;; Exit conditions:
;; HL = pointer to graphics for character
get_font_glyph_address: ;{{Addr=$12e4 Code Calls/jump count: 2 Data use count: 0}}
ld hl,Font_graphics ;{{12e4:210038}} font graphics
_get_font_glyph_address_1: ;{{Addr=$12e7 Code Calls/jump count: 1 Data use count: 0}}
push af ;{{12e7:f5}}
ld d,$00 ;{{12e8:1600}}
ex de,hl ;{{12ea:eb}}
add hl,hl ;{{12eb:29}} x2
add hl,hl ;{{12ec:29}} x4
add hl,hl ;{{12ed:29}} x8
add hl,de ;{{12ee:19}}
pop af ;{{12ef:f1}}
pop de ;{{12f0:d1}}
ret ;{{12f1:c9}}
;;===========================================================================
;; TXT SET MATRIX
TXT_SET_MATRIX: ;{{Addr=$12f2 Code Calls/jump count: 1 Data use count: 1}}
ex de,hl ;{{12f2:eb}}
call TXT_GET_MATRIX ;{{12f3:cdd412}} TXT GET MATRIX
ret nc ;{{12f6:d0}}
ex de,hl ;{{12f7:eb}}
;;---------------------------------------------------------------------------
_txt_set_matrix_4: ;{{Addr=$12f8 Code Calls/jump count: 1 Data use count: 0}}
ld bc,$0008 ;{{12f8:010800}} ##LIT##;WARNING: Code area used as literal
ldir ;{{12fb:edb0}}
ret ;{{12fd:c9}}
;;===========================================================================
;; TXT SET M TABLE
TXT_SET_M_TABLE: ;{{Addr=$12fe Code Calls/jump count: 0 Data use count: 1}}
push hl ;{{12fe:e5}}
ld a,d ;{{12ff:7a}}
or a ;{{1300:b7}}
ld d,$00 ;{{1301:1600}}
jr nz,_txt_set_m_table_23;{{1303:2019}} (+&19)
dec d ;{{1305:15}}
push de ;{{1306:d5}}
ld c,e ;{{1307:4b}}
ex de,hl ;{{1308:eb}}
_txt_set_m_table_9: ;{{Addr=$1309 Code Calls/jump count: 1 Data use count: 0}}
ld a,c ;{{1309:79}}
call TXT_GET_MATRIX ;{{130a:cdd412}} TXT GET MATRIX
ld a,h ;{{130d:7c}}
xor d ;{{130e:aa}}
jr nz,_txt_set_m_table_17;{{130f:2004}} (+&04)
ld a,l ;{{1311:7d}}
xor e ;{{1312:ab}}
jr z,_txt_set_m_table_22;{{1313:2808}} (+&08)
_txt_set_m_table_17: ;{{Addr=$1315 Code Calls/jump count: 1 Data use count: 0}}
push bc ;{{1315:c5}}
call _txt_set_matrix_4 ;{{1316:cdf812}}
pop bc ;{{1319:c1}}
inc c ;{{131a:0c}}
jr nz,_txt_set_m_table_9;{{131b:20ec}} (-&14)
_txt_set_m_table_22: ;{{Addr=$131d Code Calls/jump count: 1 Data use count: 0}}
pop de ;{{131d:d1}}
_txt_set_m_table_23: ;{{Addr=$131e Code Calls/jump count: 1 Data use count: 0}}
call TXT_GET_M_TABLE ;{{131e:cd2b13}} TXT GET M TABLE
ld (ASCII_number_of_the_first_character_in_U),de;{{1321:ed5334b7}}
pop de ;{{1325:d1}}
ld (address_of_UDG_matrix_table),de;{{1326:ed5336b7}}
ret ;{{132a:c9}}
;;===========================================================================
;; TXT GET M TABLE
TXT_GET_M_TABLE: ;{{Addr=$132b Code Calls/jump count: 2 Data use count: 1}}
ld hl,(ASCII_number_of_the_first_character_in_U);{{132b:2a34b7}}
ld a,h ;{{132e:7c}}
rrca ;{{132f:0f}}
ld a,l ;{{1330:7d}}
ld hl,(address_of_UDG_matrix_table);{{1331:2a36b7}}
ret ;{{1334:c9}}
;;===========================================================================
;; TXT WR CHAR
TXT_WR_CHAR: ;{{Addr=$1335 Code Calls/jump count: 3 Data use count: 2}}
ld b,a ;{{1335:47}}
ld a,(cursor_flag_) ;{{1336:3a2eb7}}
rlca ;{{1339:07}}
ret c ;{{133a:d8}}
push bc ;{{133b:c5}}
call scroll_window ;{{133c:cda411}}
inc h ;{{133f:24}}
ld (Current_Stream_),hl;{{1340:2226b7}}
dec h ;{{1343:25}}
pop af ;{{1344:f1}}
call TXT_WRITE_CHAR ;{{1345:cdd3bd}} ; IND: TXT WRITE CURSOR
jp TXT_DRAW_CURSOR ;{{1348:c3cdbd}} ; IND: TXT DRAW CURSOR
;;===========================================================================
;; IND: TXT WRITE CHAR
IND_TXT_WRITE_CHAR: ;{{Addr=$134b Code Calls/jump count: 1 Data use count: 0}}
push hl ;{{134b:e5}}
call TXT_GET_MATRIX ;{{134c:cdd412}} TXT GET MATRIX
ld de,RAM_b738 ;{{134f:1138b7}}
push de ;{{1352:d5}}
call SCR_UNPACK ;{{1353:cdf90e}} SCR UNPACK
pop de ;{{1356:d1}}
pop hl ;{{1357:e1}}
call SCR_CHAR_POSITION ;{{1358:cd6a0b}} SCR CHAR POSITION
ld c,$08 ;{{135b:0e08}}
_ind_txt_write_char_9: ;{{Addr=$135d Code Calls/jump count: 1 Data use count: 0}}
push bc ;{{135d:c5}}
push hl ;{{135e:e5}}
_ind_txt_write_char_11: ;{{Addr=$135f Code Calls/jump count: 1 Data use count: 0}}
push bc ;{{135f:c5}}
push de ;{{1360:d5}}
ex de,hl ;{{1361:eb}}
ld c,(hl) ;{{1362:4e}}
call _ind_txt_write_char_27;{{1363:cd7713}}
call SCR_NEXT_BYTE ;{{1366:cd050c}} SCR NEXT BYTE
pop de ;{{1369:d1}}
inc de ;{{136a:13}}
pop bc ;{{136b:c1}}
djnz _ind_txt_write_char_11;{{136c:10f1}} (-&0f)
pop hl ;{{136e:e1}}
call SCR_NEXT_LINE ;{{136f:cd1f0c}} SCR NEXT LINE
pop bc ;{{1372:c1}}
dec c ;{{1373:0d}}
jr nz,_ind_txt_write_char_9;{{1374:20e7}} (-&19)
ret ;{{1376:c9}}
;;------------------------------------------------------------------
_ind_txt_write_char_27: ;{{Addr=$1377 Code Calls/jump count: 1 Data use count: 0}}
ld hl,(address_of_text_background_routine_opaq);{{1377:2a31b7}}
jp (hl) ;{{137a:e9}}
;;===========================================================================
;; TXT SET BACK
TXT_SET_BACK: ;{{Addr=$137b Code Calls/jump count: 2 Data use count: 1}}
ld hl,write_opaque ;{{137b:219213}} ##LABEL##
or a ;{{137e:b7}}
jr z,_txt_set_back_4 ;{{137f:2803}} (+&03)
ld hl,write_transparent;{{1381:21a013}} ##LABEL##
_txt_set_back_4: ;{{Addr=$1384 Code Calls/jump count: 1 Data use count: 0}}
ld (address_of_text_background_routine_opaq),hl;{{1384:2231b7}}
ret ;{{1387:c9}}
;;===========================================================================
;; TXT GET BACK
TXT_GET_BACK: ;{{Addr=$1388 Code Calls/jump count: 0 Data use count: 1}}
ld hl,(address_of_text_background_routine_opaq);{{1388:2a31b7}}
ld de,$10000 - write_opaque;{{138b:116eec}} ;was &ec6e ##LABEL##
add hl,de ;{{138e:19}}
ld a,h ;{{138f:7c}}
or l ;{{1390:b5}}
ret ;{{1391:c9}}
;;===========================================================================
;;write opaque
write_opaque: ;{{Addr=$1392 Code Calls/jump count: 0 Data use count: 2}}
ld hl,(current_PEN_number_);{{1392:2a2fb7}}
ld a,c ;{{1395:79}}
cpl ;{{1396:2f}}
and h ;{{1397:a4}}
ld b,a ;{{1398:47}}
ld a,c ;{{1399:79}}
and l ;{{139a:a5}}
or b ;{{139b:b0}}
ld c,$ff ;{{139c:0eff}}
jr _write_transparent_1;{{139e:1803}} (+&03)
;;===========================================================================
;;write transparent
write_transparent: ;{{Addr=$13a0 Code Calls/jump count: 0 Data use count: 1}}
ld a,(current_PEN_number_);{{13a0:3a2fb7}}
;;---------------------------------------------------------------------------
_write_transparent_1: ;{{Addr=$13a3 Code Calls/jump count: 1 Data use count: 0}}
ld b,a ;{{13a3:47}}
ex de,hl ;{{13a4:eb}}
jp SCR_PIXELS ;{{13a5:c3740c}} SCR PIXELS
;;===========================================================================
;; TXT SET GRAPHIC
TXT_SET_GRAPHIC: ;{{Addr=$13a8 Code Calls/jump count: 1 Data use count: 1}}
ld (graphics_character_writing_flag_),a;{{13a8:3233b7}}
ret ;{{13ab:c9}}
;;===========================================================================
;; TXT RD CHAR
TXT_RD_CHAR: ;{{Addr=$13ac Code Calls/jump count: 1 Data use count: 1}}
push hl ;{{13ac:e5}}
push de ;{{13ad:d5}}
push bc ;{{13ae:c5}}
call scroll_window ;{{13af:cda411}}
call TXT_UNWRITE ;{{13b2:cdd6bd}} IND: TXT UNWRITE
push af ;{{13b5:f5}}
call TXT_DRAW_CURSOR ;{{13b6:cdcdbd}} IND: TXT DRAW CURSOR
pop af ;{{13b9:f1}}
pop bc ;{{13ba:c1}}
pop de ;{{13bb:d1}}
pop hl ;{{13bc:e1}}
ret ;{{13bd:c9}}
;;===========================================================================
;; IND: TXT UNWRITE
IND_TXT_UNWRITE: ;{{Addr=$13be Code Calls/jump count: 1 Data use count: 0}}
ld a,(current_PAPER_number_);{{13be:3a30b7}}
ld de,RAM_b738 ;{{13c1:1138b7}}
push hl ;{{13c4:e5}}
push de ;{{13c5:d5}}
call SCR_REPACK ;{{13c6:cd2a0f}} SCR REPACK
pop de ;{{13c9:d1}}
push de ;{{13ca:d5}}
ld b,$08 ;{{13cb:0608}}
_ind_txt_unwrite_8: ;{{Addr=$13cd Code Calls/jump count: 1 Data use count: 0}}
ld a,(de) ;{{13cd:1a}}
cpl ;{{13ce:2f}}
ld (de),a ;{{13cf:12}}
inc de ;{{13d0:13}}
djnz _ind_txt_unwrite_8;{{13d1:10fa}} (-&06)
call _ind_txt_unwrite_20;{{13d3:cde113}}
pop de ;{{13d6:d1}}
pop hl ;{{13d7:e1}}
jr nc,_ind_txt_unwrite_18;{{13d8:3001}} (+&01)
ret nz ;{{13da:c0}}
_ind_txt_unwrite_18: ;{{Addr=$13db Code Calls/jump count: 1 Data use count: 0}}
ld a,(current_PEN_number_);{{13db:3a2fb7}}
call SCR_REPACK ;{{13de:cd2a0f}} SCR REPACK
_ind_txt_unwrite_20: ;{{Addr=$13e1 Code Calls/jump count: 1 Data use count: 0}}
ld c,$00 ;{{13e1:0e00}}
_ind_txt_unwrite_21: ;{{Addr=$13e3 Code Calls/jump count: 1 Data use count: 0}}
ld a,c ;{{13e3:79}}
call TXT_GET_MATRIX ;{{13e4:cdd412}} TXT GET MATRIX
ld de,RAM_b738 ;{{13e7:1138b7}}
ld b,$08 ;{{13ea:0608}}
_ind_txt_unwrite_25: ;{{Addr=$13ec Code Calls/jump count: 1 Data use count: 0}}
ld a,(de) ;{{13ec:1a}}
cp (hl) ;{{13ed:be}}
jr nz,_ind_txt_unwrite_35;{{13ee:2009}} (+&09)
inc hl ;{{13f0:23}}
inc de ;{{13f1:13}}
djnz _ind_txt_unwrite_25;{{13f2:10f8}} (-&08)
ld a,c ;{{13f4:79}}
cp $8f ;{{13f5:fe8f}}
scf ;{{13f7:37}}
ret ;{{13f8:c9}}
_ind_txt_unwrite_35: ;{{Addr=$13f9 Code Calls/jump count: 1 Data use count: 0}}
inc c ;{{13f9:0c}}
jr nz,_ind_txt_unwrite_21;{{13fa:20e7}} (-&19)
xor a ;{{13fc:af}}
ret ;{{13fd:c9}}
;;===========================================================================
;; TXT OUTPUT
TXT_OUTPUT: ;{{Addr=$13fe Code Calls/jump count: 5 Data use count: 1}}
push af ;{{13fe:f5}}
push bc ;{{13ff:c5}}
push de ;{{1400:d5}}
push hl ;{{1401:e5}}
call TXT_OUT_ACTION ;{{1402:cdd9bd}} IND: TXT OUT ACTION
pop hl ;{{1405:e1}}
pop de ;{{1406:d1}}
pop bc ;{{1407:c1}}
pop af ;{{1408:f1}}
ret ;{{1409:c9}}
;;===========================================================================
;; IND: TXT OUT ACTION
IND_TXT_OUT_ACTION: ;{{Addr=$140a Code Calls/jump count: 1 Data use count: 0}}
ld c,a ;{{140a:4f}}
ld a,(graphics_character_writing_flag_);{{140b:3a33b7}}
or a ;{{140e:b7}}
ld a,c ;{{140f:79}}
jp nz,GRA_WR_CHAR ;{{1410:c24019}} GRA WR CHAR
ld hl,RAM_b758 ;{{1413:2158b7}}
ld b,(hl) ;{{1416:46}}
ld a,b ;{{1417:78}}
cp $0a ;{{1418:fe0a}}
jr nc,_ind_txt_out_action_42;{{141a:3031}} (+&31)
or a ;{{141c:b7}}
jr nz,_ind_txt_out_action_15;{{141d:2006}} (+&06)
ld a,c ;{{141f:79}}
cp $20 ;{{1420:fe20}}
jp nc,TXT_WR_CHAR ;{{1422:d23513}} TXT WR CHAR
_ind_txt_out_action_15: ;{{Addr=$1425 Code Calls/jump count: 1 Data use count: 0}}
inc b ;{{1425:04}}
ld (hl),b ;{{1426:70}}
ld e,b ;{{1427:58}}
ld d,$00 ;{{1428:1600}}
add hl,de ;{{142a:19}}
ld (hl),c ;{{142b:71}}
;; b759 = control code character
ld a,(RAM_b759) ;{{142c:3a59b7}}
ld e,a ;{{142f:5f}}
;; start of control code table in RAM
;; each entry is 3 bytes
ld hl,ASC_0_801513_NUL;{{1430:2163b7}}
;; this effectively multiplies E by 3
;; and adds it onto the base address of the table
add hl,de ;{{1433:19}}
add hl,de ;{{1434:19}}
add hl,de ;{{1435:19}} ; 3 bytes per entry
ld a,(hl) ;{{1436:7e}}
and $0f ;{{1437:e60f}}
cp b ;{{1439:b8}}
ret nc ;{{143a:d0}}
ld a,(cursor_flag_) ;{{143b:3a2eb7}}
and (hl) ;{{143e:a6}}
rlca ;{{143f:07}}
jr c,_ind_txt_out_action_42;{{1440:380b}} (+&0b)
inc hl ;{{1442:23}}
ld e,(hl) ;{{1443:5e}} ; function to execute
inc hl ;{{1444:23}}
ld d,(hl) ;{{1445:56}}
ld hl,RAM_b759 ;{{1446:2159b7}}
ld a,c ;{{1449:79}}
call LOW_PCDE_INSTRUCTION;{{144a:cd1600}} LOW: PCDE INSTRUCTION
_ind_txt_out_action_42: ;{{Addr=$144d Code Calls/jump count: 4 Data use count: 0}}
xor a ;{{144d:af}}
ld (RAM_b758),a ;{{144e:3258b7}}
ret ;{{1451:c9}}
;;===========================================================================
;; TXT VDU DISABLE
TXT_VDU_DISABLE: ;{{Addr=$1452 Code Calls/jump count: 0 Data use count: 2}}
ld a,$81 ;{{1452:3e81}}
call _txt_cur_disable_1;{{1454:cd9912}}
jr _ind_txt_out_action_42;{{1457:18f4}} (-&0c)
;;===========================================================================
;; TXT VDU ENABLE
TXT_VDU_ENABLE: ;{{Addr=$1459 Code Calls/jump count: 1 Data use count: 2}}
ld a,$7e ;{{1459:3e7e}}
call _txt_cur_enable_1 ;{{145b:cd8812}}
jr _ind_txt_out_action_42;{{145e:18ed}} (-&13)
;;===========================================================================
;; TXT ASK STATE
TXT_ASK_STATE: ;{{Addr=$1460 Code Calls/jump count: 0 Data use count: 1}}
ld a,(cursor_flag_) ;{{1460:3a2eb7}}
ret ;{{1463:c9}}
;;===========================================================================
;; initialise control code functions
initialise_control_code_functions:;{{Addr=$1464 Code Calls/jump count: 1 Data use count: 0}}
xor a ;{{1464:af}}
ld (RAM_b758),a ;{{1465:3258b7}}
ld hl,control_code_handler_functions;{{1468:217414}}
ld de,ASC_0_801513_NUL;{{146b:1163b7}}
ld bc,$0060 ;{{146e:016000}} ##LIT##;WARNING: Code area used as literal
ldir ;{{1471:edb0}}
ret ;{{1473:c9}}
;;===========================================================================
;; control code handler functions
;; (see SOFT968 for a description of the control character operations)
;; byte 0: bits 3..0: number of parameters expected
;; byte 1,2: handler function
control_code_handler_functions: ;{{Addr=$1474 Data Calls/jump count: 0 Data use count: 1}}
defb $80
defw performs_control_character_NUL_function; NUL: ##LABEL##
defb $81
defw TXT_WR_CHAR ; SOH: firmware function: TXT WR CHAR ##LABEL##
defb $80
defw TXT_CUR_DISABLE ; STX: firmware function: TXT CUR DISABLE ##LABEL##
defb $80
defw TXT_CUR_ENABLE ; ETX: firmware function: TXT CUR ENABLE ##LABEL##
defb $81
defw SCR_SET_MODE ; EOT: firmware function: SCR SET MODE ##LABEL##
defb $81
defw GRA_WR_CHAR ; ENQ: firmware function: GRA WR CHAR ##LABEL##
defb $00
defw TXT_VDU_ENABLE ; ACK: firmware function: TXT VDU ENABLE ##LABEL##
defb $80
defw performs_control_character_BEL_function; BEL: ##LABEL##
defb $80
defw performs_control_character_BS_function; BS: ##LABEL##
defb $80
defw performs_control_character_TAB_function; TAB: ##LABEL##
defb $80
defw performs_control_character_LF_function; LF: ##LABEL##
defb $80
defw performs_control_character_VT_function; VT: ##LABEL##
defb $80
defw TXT_CLEAR_WINDOW ; FF: firmware function: TXT CLEAR WINDOW ##LABEL##
defb $80
defw performs_control_character_CR_function; CR: ##LABEL##
defb $81
defw TXT_SET_PAPER ; SO: firmware function: TXT SET PAPER ##LABEL##
defb $81
defw TXT_SET_PEN_ ; SI: firmware function: TXT SET PEN ##LABEL##
defb $80
defw performs_control_character_DLE_function; DLE: ##LABEL##
defb $80
defw performs_control_character_DC1_function; DC1: ##LABEL##
defb $80
defw performs_control_character_DC2_function; DC2: ##LABEL##
defb $80
defw performs_control_character_DC3_function; DC3: ##LABEL##
defb $80
defw performs_control_character_DC4_function; DC4: ##LABEL##
defb $80
defw TXT_VDU_DISABLE ; NAK: firmware function: TXT VDU DISABLE ##LABEL##
defb $81
defw performs_control_character_SYN_function; SYN: ##LABEL##
defb $81
defw SCR_ACCESS ; ETB: firmware function: SCR ACCESS ##LABEL##
defb $80
defw TXT_INVERSE ; CAN: firmware function: TXT INVERSE ##LABEL##
defb $89
defw performs_control_character_EM_function; EM: ##LABEL##
defb $84
defw performs_control_character_SUB_function; SUB: ##LABEL##
defb $00
defw performs_control_character_ESC_function; ESC ##LABEL##
defb $83
defw performs_control_character_FS_function; FS: ##LABEL##
defb $82
defw performs_control_character_GS_instruction; GS: ##LABEL##
defb $80
defw performs_control_character_RS_function; RS: ##LABEL##
defb $82
defw performs_control_character_US_function; US: ##LABEL##
;;=============================================================================
;; TXT GET CONTROLS
TXT_GET_CONTROLS: ;{{Addr=$14d4 Code Calls/jump count: 0 Data use count: 1}}
ld hl,ASC_0_801513_NUL;{{14d4:2163b7}}
ret ;{{14d7:c9}}
;;=============================================================================
;; data for control character 'BEL' sound
data_for_control_character_BEL_sound:;{{Addr=$14d8 Data Calls/jump count: 0 Data use count: 1}}
defb $87 ; channel status byte
defb $00 ; volume envelope to use
defb $00 ; tone envelope to use
defb $5a ; tone period low
defb $00 ; tone period high
defb $00 ; noise period
defb $0b ; start volume
defb $14 ; envelope repeat count low
defb $00 ; envelope repeat count high
;;=============================================================================
;; performs control character 'BEL' function
performs_control_character_BEL_function:;{{Addr=$14e1 Code Calls/jump count: 0 Data use count: 1}}
push ix ;{{14e1:dde5}}
ld hl,data_for_control_character_BEL_sound;{{14e3:21d814}}
call SOUND_QUEUE ;{{14e6:cd1421}} SOUND QUEUE