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fe3firmware.asm
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fe3firmware.asm
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;;;
;;; VIC-20 Final Expansion Cartridge firmware
;;;
processor 6502 ;VIC20
org $9000,0 ;Modulstart (Fill value=0)
rorg $7000
include "version.inc"
;------------------------------
CAS_BUF = $033c ;CASSETTE BUFFER
F_IO = CAS_BUF +0 ;IO FLAG
F_WE = CAS_BUF +1 ;WEDGE FLAG
F_CURDEV = CAS_BUF +2 ;WEDGE FLAG
F_JOYREP = CAS_BUF +3 ;JOYSTICK TIMER
MY_WEDGE_LO = CAS_BUF +4 ;WEDGE LOW ADDRESS
F_END = CAS_BUF +5
;------------------------------
FLGCOM = $08
CHRPTR = $7a ;Char Pointer
PT1 = $22 ;Pointer
PT2 = $24 ;Pointer
PT3 = $14 ;Pointer
FAC = $61
C_LINE = $d1 ;pointer current line char RAM
C_COLP = $f3 ;pointer current line color RAM
C_CTRL = $d4 ;control mode
C_ROW = $d6 ;cursor row
C_COL = $d3 ;cursor column
C_CHR = $d7 ;cuurent char
BASSTRT = $2B ;BASIC START
BASVAR = $2d ;BASIC VARS
BASARR = $2f ;BASIC ARRAYS
BASAEND = $31 ;BASIC ARRAYS END
BASSTR = $33 ;BASIC STRINGS
STRPTR = $35 ;STRING POINTER
BASEND = $37 ;BASIC END
SAVESTART = $c1
LOADPTR = $c3
LOADSTART = $ac
LOADEND = $ae
KEYANZ = $c6
IECSTAT = $90
LEN_FNAM = $b7
PTR_FNAM = $bb
SY_VERIFY = $93
SY_STATUS = $90
SY_SA = $b9
SY_DN = $ba
SY_FN = $b8
DIRECT_MODE = $9d ;Direct=$80/RUN=0
CHRGET = $0073 ;GET NEXT CHAR
CHRGOT = $0079 ;GET LAST CHAR
BIP = $0200 ;BASIC Input Buffer 88 Bytes
BIP_E = BIP +88 ;BASIC Input Buffer End - Stack
STP = $0100 ;LOW Stack - Text Buffer
IO_FINAL = $9c02 ;FINAL EXPANSION REGISTER 1 (39938,39939)
FEMOD_START = $00 ;MODE START
FEMOD_ROM = $40 ;MODE EEPROM (READ EEPROM, WRITE RAM)
FEMOD_FLASH = $20 ;MODE FLASH EEPROM (READ EEPROM, WRITE EEPROM)
FEMOD_RAM_1 = $80 ;MODE RAM 1 (READ::BANK 1,WRITE::BANK 1/2)
FEMOD_RAM_2 = $C0 ;MODE RAM 2 (WRITE::BANK 1,READ::BANK 1/2)
FEMOD_SRAM = $A0 ;MODE BIG SRAM (SRAM 512KB, BANK 0 TO 15)
SOFT_RESET = $fd22 ;SOFT RESET
CURSOR_POS = $e50a
BSOUT = $ffd2
GETIN = $ffe4
OPEN = $ffc0 ; Open Vector [F40A] Open File
; Preparing: SETLFS, SETNAM
CLOSE = $ffc3 ; Close Vector [F34A] Close File
SETLFS = $ffba ; Set Logical File Parameters
SETNAM = $ffbd ; Set Filename / Command
LOAD = $ffd5 ; Load RAM From Device
;CHROUT = $ffd2 ; Output Vector, chrout [F27A] Output One Character
; Preparing: OPEN, CHKOUT (not for video output)
CHKIN = $ffc6 ; Set Input [F2C7] Set Input Device
; Preparing: OPEN
CHRIN = $ffcf ; Input Vector, chrin [F20E] Input a byte
; Preparing: OPEN, CHKIN
PRNSTR = $cb1e ; print string in A/Y, 0 terminated
PRNINT = $ddcd ; print integer in X/A
PRNERR = $c437 ; print basic error message in X = (from $01 to $1e)
BASSFT = $e467 ; BASIC Warm Restart [RUNSTOP-RESTORE]
CHRGETSUB = $0079 ; CHRGET subroutine return point after modify
SY_MOVEMEM = $c3bf ; Move memory from (start($5f-$60)/end+1($5a-$5b)) to (end+1($58-$59))
GETIN = $ffe4 ; Get a byte From Keyboad or serial device
FRMEVL = $cd9e ; Evaluate Expression in Text
RESET = $fd22 ; Reset Vic
READY = $c474 ; Restart BASIC
CINT1 = $e518 ; Initialize I/O
CLRSCN = $e55f ; clear screen
; TurboLoad
secnd = $ff93 ; send secondary address for LISTEN
ciout = $ffa8 ; write serial data
unlsn = $ffae ; send UNLISTEN command
listn = $ffb1 ; send LISTEN command
fa = $ba ; Current Device Number
CLRCH = $ffcc ; Restore Default I/O status
dir_current_device = $ba
dir_current_curposline = $d3
dir_status_word_st = $90
dir_reverse_flag = $c7
dir_basicstartaddress_lo = $2b
dir_basicstartaddress_hi = $2c
dir_basiclinenumber_hi = $3a
dir_index1_lo = $22
dir_index1_hi = $23
dir_basicpointer_lo = $7a
dir_basicpointer_hi = $7b
dir_tapecharparity = $9b ;unmovable ???
dir_current_key = $c5
dir_chars_in_key_buffer = $c6
dir_output_control = $9d ;Direct=$80/RUN=0
dir_char_under_cursor = $ce
; TurboLoad
fl_status_word_st = $90
fl_load_verify_flag = $93 ; Load=0 else Verify
fl_current_device = $ba
fl_char_in_file_name = $b7
fl_filename_pointer_lo = $bb
fl_filename_pointer_hi = $bc
fl_current_sa = $b9
fl_current_logical_file = $b8
fl_endprogram_address_lo = $ae ; is used as temp pointer of code
fl_endprogram_address_hi = $af ; to send to the drive too
fl_filename_pointer = $bb ; $BB-$BC Pointer: to file name
fl_output_control = $9d ; Direct=$80/RUN=0
fl_basicstartaddress_lo = $2b
fl_basicstartaddress_hi = $2c
; ----- other zero page locations (movable) ------
dir_old_key = $fd
dir_command_set = $fe
; TurboLoad
; $f7-$fa is RS232 pointers, $fb-$fe is unused
iec0d1a = $f7
iec0d1b = $f8
iec1d1a = $f9
iec1d1b = $fa
store = $fc
mwcmd = $f7 ;f7-fc used first to temp store SETLFS & SETNAM parameters
; and after to send the "M-W" command to the drive.
; Since these operations are made before the
; fastloading process i share the same location of
; iec0d1a,iec0d1b,iec1d1a,iec1d1b and store variables.
; Used as temp value for loader start routine too.
; shared address because used with CTRL+F1/F3/F5/F7
From_Lo = $f7 ;FB ;From address (lo-byte)
From_Hi = $f8 ;FC ;From address (hi-byte)
To_Lo = $f9 ;FD ;to address (lo-byte)
To_Hi = $fa ;FE ;ti address (hi-byte)
; **************** other page locations used ****************
; ----- used by the kernal (unmovable) ------
dir_shift_ctrl_cbm_flag = $028d
dir_keyboard_buffer = $0277 ;($0277-$0280)
dir_start_memory_hi = $282 ; Start of memory (hi-byte)
dir_top_memory_hi = $284 ; Top of memory (hi-byte)
dir_screen_mem_page = $288 ; Screen memory page start (hi-byte)
; **************** I/O constants ****************************
; TurboLoad
AMOUNT = $20 ; amount of data bytes to transfer with one M-W command
ESCBYTE = $ef ; the escape char used in the transfers
RETRIES = 20 ; amount of retries in reading a block
DEFAULT_DEVICE = 8 ; Default device number
CheckByte = #214
iecport1 = $912c ;$dd00 ;$912c
dato = 32 ;32 ;32
clko = 2 ;16 ;2
iecport2 = $911f ;$dd00 ;$911f
atno = 128 ;8 ;128
clki = 1 ;64 ;1
dati = 2 ;128 ;2
; ***********************************************************************
; ==============================================================
; Startup screen
; ==============================================================
STARTUPSCREEN
; dc.b CLRHOME, WHITE, CR, RVSON, "DISK UTILITY CARTRIDGE", CR, CR
dc.b CLRHOME,FONT2,YELLOW,RVSON,"*fINAL eXPANSION V3.2*", CR
dc.b RVSON, "512/512kb sYSTEM V", FW_VERSION, CR, CR, CR
dc.b WHITE,RVSON,"f1",RVSOFF," ram mANAGER", CR, CR
; dc.b "",RVSON,"f2",RVSOFF," basic uN-new", CR, CR
dc.b CR, CR
dc.b RVSON,"f3",RVSOFF," dISK lOADER", CR, CR
dc.b RVSON,"f4",RVSOFF," hELP", CR, CR
dc.b RVSON,"f5",RVSOFF," cART lOADER", CR, CR
; dc.b CR, CR
dc.b RVSON,"f6",RVSOFF," fe3 uTILITIES", CR, CR
; dc.b CR, CR
dc.b WHITE,RVSON,"f7",RVSOFF," basic (wEDGE)", CR, CR
dc.b "",RVSON,"f8",RVSOFF," basic (NORMAL)", CR, CR, CR
dc.b RVSON,"+",RVSOFF,"/",RVSON,"-",RVSOFF," dRIVE #"
dc.b $00
; ==============================================================
; Help screen
; ==============================================================
HELPSCREEN
dc.b WHITE
HELPSCREEN3
dc.b CLRHOME,FONT2,RVSON,"fe3 wEDGE cOMMANDS", CR, CR ;RVSOFF Not Needed
dc.b "$ dIRECTORY", CR
dc.b AT, " sTATUS/cOMMAND", CR
dc.b "/ lOAD", CR
dc.b "% lOAD bINARY", CR
dc.b "# dRIVE", CR,CR
dc.b "OLD/UNNEW basic", CR
dc.b "KILL/OFF END WEDGE", CR
dc.b "NOIO/BLKD/BLKP", CR
dc.b "RESET", CR
dc.b CR ;RVSOFF Not Needed
dc.b "sys41000 hELP", CR
dc.b "sys41003 wEDGE", CR
dc.b "sys41006 wEDGE at $340", CR, CR, CR
dc.b $00
; ==============================================================
; RAM setting menu
; ==============================================================
RAMSCREEN
dc.b CLRHOME,FONT2,YELLOW,RVSON, " ram cONFIGURATION ",CR,CR,CR
dc.b WHITE,RVSON,"f1",RVSOFF," 3 kb (6655)", CR, CR
dc.b "",RVSON,"f2",RVSOFF," 8 kb (11775)", CR, CR
dc.b RVSON,"f3",RVSOFF," 16 kb (19967)", CR, CR
dc.b "",RVSON,"f4",RVSOFF," 24 kb (28159)", CR, CR
dc.b RVSON,"f5",RVSOFF," 24+3 kb (28159)", CR, CR
dc.b "",RVSON,"f6",RVSOFF," oFF (NO wEDGE!)", CR, CR
dc.b RVSON,"f7",RVSOFF," aLL ram (28159)", CR, CR, CR
dc.b "",RVSON,"f8",RVSOFF," mAIN mENU", CR, CR, CR
dc.b "io ",RVSON,"r",RVSOFF,"EGISTER ( )", CR
dc.b "eASY ",RVSON,"w",RVSOFF,"EDGE ( )"
dc.b $00
; ==============================================================
; UTILITY menu
; ==============================================================
UTILSCREEN
dc.b CLRHOME,FONT2,YELLOW,RVSON, " fe3 uTILITIES ",CR,CR,CR
dc.b WHITE,RVSON,"f1",RVSOFF," fLASH pROGRAM", CR, CR
dc.b "",RVSON,"f2",RVSOFF," fLASH fIRMWARE", CR, CR
dc.b RVSON,"f3",RVSOFF," fLASH iNFO", CR, CR
;dc.b CR, CR
;dc.b "",RVSON,"f4",RVSOFF," 24 kb (28159)", CR, CR
dc.b CR, CR
; dc.b RVSON,"f5",RVSOFF," bACKUP fLASH", CR, CR
dc.b CR, CR
;dc.b "",RVSON,"f6",RVSOFF," oFF", CR, CR
dc.b CR, CR
; dc.b RVSON,"f7",RVSOFF," rESTORE fLASH", CR, CR, CR
dc.b CR, CR, CR
F8SCREEN
dc.b "",RVSON,"f8",RVSOFF," mAIN mENU", CR, CR, CR
dc.b $00
; ==============================================================
; MENU FOOTER
; ==============================================================
MENUSCREEN
dc.b HOME,YELLOW, CR, CR
; dc.b 210,210,210,210,210,210,210,210,210,210,210
dc.b 96,96,96,96,96,96,96,96,96,96,96
dc.b 96,96,96,96,96,96,96,96,96,96,96
dc.b CR, CR, CR, CR, CR, CR, CR, CR, CR
dc.b CR, CR, CR, CR, CR, CR, CR, CR, CR
dc.b 96,96,96,96,96,96,96,96,96,96,96
dc.b 96,96,96,96,96,96,96,96,96,96,96, CR
; dc.b 197,197,197,197,197,197,197,197,197,197,197,CR
; "---- DISK LOADER -----"
dc.b RVSON,"f1",RVSOFF,"/",RVSON,"f3",RVSOFF,":pGuP/dWN "
dc.b RVSON,"f8",RVSOFF,":eXIT",CR
dc.b RVSON,"f5",RVSOFF,"/",RVSON,"f7",RVSOFF,":fIRST-/lAST lINE"
dc.b HOME,$00
; ==============================================================
; The credits!
; ==============================================================
THECREDITS
dc.b CLRHOME, YELLOW, "V3 06/2009", CR, CR
dc.b RED, "CREATED BY:", CR, CR
dc.b BLACK
dc.b "LEIF BLOOMQUIST", CR
dc.b "ANDERS PERSSON", CR
dc.b "ANDERS CARLSSON", CR
dc.b "CHRISTOPHER PREST", CR
dc.b "BRIAN LYONS", CR
dc.b "LEE DAVIDSON", CR
dc.b "SCHLOWSKI", CR
dc.b "VIPERSAN", CR
dc.b "DANIEL KAHLIN", CR
dc.b "JEFF DANIELS", CR
dc.b "MICHAEL KLEIN", CR
dc.b "DAVID A. HOOK", CR
dc.b "NILS EILERS", CR
dc.b "DIRK VROOMEN", CR
dc.b "TOMMY WINKLER", CR, CR
dc.b $00
THECREDITSP2
dc.b PURPLE
dc.b "WWW.SLEEPINGELEPHANT", CR
dc.b ".COM/DENIAL/", CR
dc.b BLUE
dc.b $00
MSG_EXISTS
dc.b CR,RVSON,"A",RVSOFF,"BORT ",RVSON,"R",RVSOFF,"EPLACE ",RVSON,"U",RVSOFF,"PDATE ",CR,0
; ==============================================================
; ROM $6 FUNCTIONS
; ==============================================================
EXEC_SAVE = 0
EXEC_LOADER = 1
DO_EXECUTE subroutine
tax
bne .1
jmp RPROC_SAVE
.1
dex
bne .2
jmp RPROC_LOADER
.2
rts
; ==============================================================
; PROC AFTER "FILE EXISTS"
; ==============================================================
CH_OLDFILE = 39 ; '
;CH_OLDFILE = 36 ; $
RPROC_SAVE subroutine
lda STP
cmp #"6"
bne .rts
lda STP +1
cmp #"3"
bne .rts
lda #<MSG_EXISTS
ldy #>MSG_EXISTS
jsr STROUT
.key
jsr WAIT_KEY
cmp #"A"
beq .rts
cmp #"R"
beq .replace
cmp #"U"
beq .update
bne .key
.err
;jsr PRINT_DISK_ERR
jsr GET_DISK_STAT
jsr PRINT_BIP_0
.rts
clc
rts
.replace
lda #<MSG_DEL_FILE
ldy #>MSG_DEL_FILE
jsr SY_STROUT
.repl2
jsr START_DISK_SCRATCH
bcs .err
jsr IECNAMOUT_2
.okul
jsr UNLISTEN
sec
rts
.update
lda #<MSG_DEL_OLDFILE
ldy #>MSG_DEL_OLDFILE
jsr SY_STROUT
jsr START_DISK_SCRATCH
bcs .err
lda #CH_OLDFILE
jsr IECOUT
jsr IECNAMOUT_2
jsr UNLISTEN
lda #<MSG_RENAME_FILE
ldy #>MSG_RENAME_FILE
jsr SY_STROUT
jsr START_DISK_RENAME
bcs .err
lda #CH_OLDFILE
jsr IECOUT
jsr IECNAMOUT_2
lda #"="
jsr IECOUT
jsr IECNAMOUT_2
jmp .okul
MSG_DEL_FILE
dc.b "DELETING FILE ...",13,0
MSG_DEL_OLDFILE
dc.b "DELETING OLD FILE ...",13,0
MSG_RENAME_FILE
dc.b "RENAMING FILE ...",13,0
; ==============================================================
; DISK COMMANDS RENAME AND SCRATCH
; ==============================================================
START_DISK_SCRATCH
lda #"S"
bne START_DISK_CMD
START_DISK_RENAME
lda #"R"
START_DISK_CMD subroutine
pha
jsr DISK_LISTEN_6F
lda IECSTAT
bmi .err
pla
jsr IECOUT
lda #":"
jsr IECOUT
clc
rts
.err
jsr UNLISTEN
pla
sec
rts
; =====================================================================
; MENU LOADER
; Schaltet in ROM Modus und lädt 1 oder mehrere Dateien in den Speicher
; Lade Instruktionen stehen in der Tabelle DL_LDBUF
; =====================================================================
RPROC_LOADER subroutine
;LOADER PARAM :: "filename",B|P|C [,$adress] B=BASIC Code,P=Program,C=Cartridge
jsr SET_PT2_LDBUF
ldx DL_CNTLDR
.2
txa
pha
jsr PRINT_LOADMSG ;SET LOAD INFO, PRINT MESSAGE
jsr GET_FILETYP
cpx #"B"
bne .3
jsr LOAD_BASIC_2
jmp .4
.3
jsr MY_IECLOAD
.4
bcs .ERR
jsr ADD_PT2_LDBUF ;NEXT LDBUF
pla
tax
dex
bne .2
.E
jsr PRINT_IO
clc
rts
.ERR
pla
jmp LOAD_ERR
;PRINT LOAD MESSAGE
PRINT_LOADMSG subroutine
ldy #LDBUF_LAD
lda (PT2),y ; LOAD ADR LOW
sta LOADPTR
iny
lda (PT2),y ; LOAD ADR HIGH
sta LOADPTR +1
beq .2B
lda #$ff
.2B
tay ; SA
iny
lda #1
ldx F_CURDEV ; device#
jsr SETFNUM
jsr GET_FILETYP
cpx #"B"
bne .3B
jsr PRINT_LOADING
dc.b "LOAD BASIC PROG",0
jmp LOAD_BASIC_START
.3B
cpx #"C"
bne .3C
lda LOADPTR +1
bne .3B2
lda #$a0 ;DEFAULT CARTRIDGE ADDRESS
sta LOADPTR +1
.3B2
ldy #2
sty SY_SA
jsr PRINT_LOADING
dc.b "LOAD CART",0
rts
.3C
jsr PRINT_LOADING
dc.b "LOAD PROG",0
rts
GET_FILETYP subroutine
ldy #LDBUF_TYP
lda (PT2),y
tax
rts
; ==============================================================
; END :: ROM $6 FUNCTIONS
; ==============================================================
rend
org $a000,0 ;$A000 (Fill value=0)
; ==============================================================
; Startup
; ==============================================================
dc.w START ; Entry point for power up
dc.w RESTORE ; Entry point for warm start (RESTORE)
CARTID
dc.b "A0",$C3,$C2,$CD ; 'A0CBM' boot string
SY_STROUT = $cb1e ;String in AC/YR ausgeben
SY_RAMTAS = $fd8d
;SY_RAMTAS2 = $fd9b
SY_INITVEC = $fd52
SY_INITIO1 = $fdf9
SY_INITIO2 = $e518
SY_INITVEC2 = $e45b ; Init Vectors
SY_BASRAM = $e3a4 ; BASIC RAM
SY_INITMSG = $e404 ; INIT Message (needed so keycheck routine below works)
START
jsr SY_RAMTAS ; RAMTAS - Initialise System Constants
jsr SY_INITVEC ; Init Vectors
jsr SY_INITIO1 ; Init I/O
jsr SY_INITIO2 ; Init I/O
cli
;BASIC Init (Partial)
jsr SY_INITVEC2 ; Init Vectors
jsr SY_BASRAM ; BASIC RAM
jsr SY_INITMSG ; INIT Message (needed so keycheck routine below works)
; Force startup with device #8 (disk)
lda #$08
sta F_CURDEV
bne START2
org $a028 ; - equals 41000 decimal, easy to remember!
JMP_TABLE
jmp HELP2 ; sys 41000: Help sreen
jmp MY_WEDGE_INIT ; sys 41003: Init Wedge
jmp MOVE_WEDGE_LOW ; sys 41006: Copy Wedge to low mem
jmp SET_BASE_VECTORS ; sys 41009: Set Base vectors
; COPY FIRMWARE FROM EEPROM TO SRAM
COPYROM subroutine
lda #>$a000
ldy #<$a000
ldx #32 ; copy 32 pages
COPYROM_2
sta PT2 +1
sty PT2
jsr TEST_RAM ;RAM OK?
bcc .02
ldy #0
.01
lda (PT2),y
sta (PT2),y
iny
bne .01
inc PT2 +1
dex
bne .01
;sty CARTID
;sty CARTID +1
lda #FEMOD_RAM_1 +$10 ; ALL RAM, PROTECT BLK-5
sta IO_FINAL
sec
.02
rts
INIT_CART subroutine
lda #$6e ; Blue Screen
;lda #$6d ; Blue Screen,green border
;lda #$6b ; Blue Screen, cyan border
sta $900f ; Screen Color
rts
START2 subroutine
lda #"."
sta F_IO
lda #"X"
sta F_WE
.CHECK
; Check which control keys are pressed.
lda $028d
; if C=, go straight to BASIC.
cmp #$02
bne .SHIFT
.basic
jmp BASIC
; if SHIFT, go straight to BASIC with wedge enabled.
.SHIFT
cmp #$01
bne .CTRL
.wedge
jmp STARTWEDGE
; if CTRL, start Boot-LOADER
.CTRL
cmp #$04
bne .01
.bootloader ; execute boot-loader
lda #FEMOD_ROM ;ROM
jsr UNLOCK_IO ;UNLOCK IO
jsr COPYROM
lda #$08
sta F_CURDEV
jsr INIT_CART ; Screen Colors
jsr SPAR_PRINTSTRING
dc.b CLRHOME,YELLOW,FONT2,RVSON,"---- bOOT lOADER ----",CR,CR,0
jsr COPYROM ; COPY FIRMWARE TO SRAM
jsr DLOADER_INIT
jsr BLD_TABLE
jsr LIST_PAGE
jsr LIST_MARKER
pla
pla
jsr DLOA_00
jmp SSCREEN
.01
lda #FEMOD_ROM ;ROM
jsr UNLOCK_IO ;UNLOCK IO
bne .basic
jsr COPYROM
bcc .basic
;CARTID
; ==============================================================
; Default Startup - show init screen
; ==============================================================
SSCREEN subroutine
jsr INIT_CART
lda #<STARTUPSCREEN
ldy #>STARTUPSCREEN
jsr STROUT_R
jsr SHOWDRIVE
SETUPTIMEOUT
;Initialize Timer
; ldy $a1 ; part of TI clock, updated every 256/60 = 4.2 seconds
; iny
; iny
; iny ;Jump ahead three 'ticks' = 12.6 seconds
; Check for timeout
.TIMEOUT
; cpy $a1
; bne KEYS
;STARTWEDGE_H
; jmp STARTWEDGE
; Check keys
.KEYS
jsr WAIT_KEY
.DENIAL
cmp #$43 ; 'C' --> show credits
bne .F1
jsr CREDITS
jmp WAITSPACE_2
.F1
cmp #$85 ;F1
bne .DEL
jmp RAMMENU
.DEL
; cmp #$14 ;DEL
; bne .F2
; jmp STARTWEDGE
.F2
; cmp #$89 ;F2
; bne F3
; jsr INIT_BASIC
; jsr SY_INITMSG ; INIT Message
; jmp DO_UNNEW
.F3
cmp #$86 ;F3
bne .F4
jmp DLOADER
.F4
cmp #$8a ;F4
bne .F5
jmp HELP
.F5
cmp #$87 ;F5
bne .F6
jmp CART_LOADER
.F6
cmp #$8b ;F6
bne .PLUS
jmp UTIL_MENU
.PLUS
cmp #$2b ;+
bne .MINUS
jmp INCDRIVE
.MINUS
cmp #$2D ;-
bne .F7
jmp DECDRIVE
.F7
cmp #$88 ;F7
bne .F8
jmp STARTWEDGE
.F8
cmp #$8C
bne .TIMEOUT
jmp BASIC
; ==============================================================
; DISPLAY STRING IN ROM in AC/YR
; ==============================================================
STROUT_R subroutine
jsr SET_ROM
jsr STROUT
jmp SET_BACK
; ==============================================================
; EXECUTE FUNCTION IN ROM in AC
; ==============================================================
EXECUTE_R subroutine
jsr SET_ROM
jsr DO_EXECUTE
SET_BACK
lda 2
sta IO_FINAL
rts
SET_ROM
pha
lda IO_FINAL
sta 2
lda #FEMOD_ROM
sta IO_FINAL
pla
rts
; ==============================================================
; Start Wedge and return to BASIC
; ==============================================================
INIT_BASIC
jsr SY_INITVEC ; Init Vectors
jsr SY_INITIO1 ; Init I/O
jsr SY_INITIO2 ; Init I/O
cli
; lda #$06
; sta $0286 ; Restore blue text
;BASIC Init (Partial)
jsr SY_INITVEC2 ; Init Vectors
jmp SY_BASRAM ; BASIC RAM
;Clear keyboard buffer
; lda #$00
; sta KEYANZ
; Restore normal startup colors
INIT_DEF
lda #$1b
sta $900f
; Restore normal startup colors
lda #FONT1
jmp CHROUT
BASIC_WARM = $e467
STARTWEDGE
sei
jsr SY_RAMTAS ; RAMTAS - Initialise System Constants
jsr INIT_BASIC
jsr MY_WEDGE_INIT
STARTWEDGE1
jsr SY_INITMSG ; INIT Message
jsr SET_BASE_VECTORS ; Set Base vectors
STARTWEDGE2
;jsr COPYROM ; COPY FIRMWARE TO SRAM
;bcc xxx ; ==> RAM ERROR
lda #<WEDGEMESSAGE1b
ldy #>WEDGEMESSAGE1b
jsr STROUT_R
lda PTR_INPUT_LOOP +1
STWE_3
jsr HEXOUT2
lda #<WEDGEMESSAGE2
ldy #>WEDGEMESSAGE2
jsr STROUT_R
jmp BASIC_WARM
; ==============================================================
; Wedge Message
; ==============================================================
;WEDGEMESSAGE1a
; dc.b $11, $1C, "EASYWEDGE ($", 0
WEDGEMESSAGE2
dc.b ")",$11, $1F, 0
; ==============================================================
; Return to BASIC
; ==============================================================
BASIC
sei
jsr SY_RAMTAS ; RAMTAS - Initialise System Constants
jsr INIT_BASIC
BASIC1
jsr SY_INITMSG ; INIT Message
BASIC2
;lda #0
;jsr SY_RAMTAS2 ;calculate RAM size
; Complete BASIC Warm Start (since init is done above)
jmp BASIC_WARM
; ==============================================================
; Handle the RESTORE key
; ==============================================================
RESTORE
jmp $fec7 ; Continue as if no cartridge installed
; ==============================================================
; List all the Denial Helpers
; ==============================================================