-
Notifications
You must be signed in to change notification settings - Fork 0
/
vt100.cda.S
1048 lines (817 loc) · 10.3 KB
/
vt100.cda.S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
lst off
rel
xc
xc
cas se
tbx on ; qasm
use apple2gs.equ
use vt.equ
use debug
* alternate character set
* $00-$1f = upper inverse ( asci value - $40)
* $20-$3f = special inverse (ascii value)
* $40-$4f = mouse text
* $60-$7f = lower inverse (= ascii value)
* $80-$9f = upper [redundant]
* $a0-$bf = special (high ascii)
* $c0-$df = upper (high ascii)
* $e0-$ff = lower (high ascii)
* 40-column control panel
* TODO - if 80 column set in preferences, draw centered in 80-column mode
dum 0
* cda direct page variables
ptr ds 2
dend
*
* rom 0/1 doesn't include _RemoveCDA in ROM so it can't be removed.
* additionally, _InstallCDA has bugs.
* so, for now, disable on ROM 1.
cda_startup ent
php
rep #$30
jsr $fe1f ; idroutine. y = rom
cpy #3
bcc :nope
*
* rom 1 IIgs InstallCDA clobbers $3c-$43 on the direct page
*
phd
pea #0
pld
psl #handle
_InstallCDA
pld
:nope
plp
rts
cda_shutdown ent
mx %00
jsr $fe1f ; idroutine. y = rom
cpy #3
bcc :nope
phd
pea #0
pld
psl #handle
_RemoveCDA
pld
:nope
rts
handle adrl Header ; can use a fake handle for now, until we need to _RemoveCDA
Header
str 'Virtual Terminal'
adrl start
adrl shutdown
* variables.
page ds 2
MAX_PAGE equ 8
pages dw variables
dw hexdump_r
dw hexdump_w
dw ssc_registers
shutdown
mx %00
rtl
start
mx %00
phb
phd
phk
plb
sep #$30
sta TXTSET
sta CLR80VID
sta SETALTCHAR
rep #$30
stz page
jsr clear
jsr box
main
jsr clear_inner
ldx page
jsr (pages,x)
:keyloop
sep #$30
lda KBD
bpl :keyloop
sta KEYSTROBE
rep #$30
and #$7f
cmp #$1b
beq :exit
cmp #$08 ; left
beq :left
cmp #$15
beq :right
bra :keyloop
:exit
pld
plb
rtl
:left lda page
dec
dec
bpl :lok
lda #MAX_PAGE-2
:lok sta page
bra main
:right lda page
inc
inc
cmp #MAX_PAGE
bcc :rok
lda #0
:rok sta page
bra main
clear
ldx #23*2
lda #" "
:loop
ldy text,x
]offset equ 0
lup 20
sta |0+]offset,y
]offset equ ]offset+2
--^
dex
dex
bpl :loop
rts
clear_inner
* clear the inner contents.
ldx #16*2
lda #" "
:loop ldy text+8,x
]offset equ 4
lup 16
sta |0+]offset,y
]offset equ ]offset+2
--^
dex
dex
bpl :loop
rts
box
php
* top line
lda #"_ "
sta |line_0+38
lda #" _"
sta |line_0
lda #"__"
ldx #34
]loop sta |line_0+2,x
dex
dex
bpl ]loop
* bottom line.
* 'L' = $4c = _ but high
lda #'L '!$8000 ; keep ' ' high ascii.
sta |line_23+38
lda #' L'!$0080 ; keep ' ' high ascii.
sta |line_23
lda #'LL'
ldx #34
]loop sta |line_23+2,x
dex
dex
bpl ]loop
* sides
sep #$20
lda #'Z'
ldx #21*2 ; skip top/bottom lines.
]loop ldy text+2,x
sta |$0,y
dex
dex
bpl ]loop
sep #$20
lda #'_'
ldx #21*2 ; skip top/bottom lines.
]loop ldy text+2,x
sta |$0+39,y
dex
dex
bpl ]loop
rep #$20
* title
ldx #36
]loop lda :title,x
sta |line_1+1,x
dex
dex
bpl ]loop
lda #'LL'
ldx #36
]loop sta |line_2+1,x
dex
dex
bpl ]loop
* bottom instructions
ldx #:instr_len-2
]loop lda :instr,x
sta |line_22+1,x
dex
dex
bpl ]loop
plp
rts
:instr
asc " Select: ",'H'," ",'U'," ",'J'," ",'K'
asc " Cancel:Esc Save: ",'M'," "
:instr_len equ *-:instr
err :instr_len&1
:title
asc " Virtual Terminal "
ds 38-18,' '
* print variables.
variables
php
sep #$20
jsr local
jsr decanm
jsr decom
jsr deckpam
jsr decckm
jsr decawm
jsr decarm
jsr decscnm
jsr deccolm
jsr lnm
jsr sgr
jsr dectm
jsr decbm
jsr decx
jsr decy
plp
rts
local
mx %10
ldy #line_4+4
ldx #:str
jsr print_xy_str
lda DPAGE+LOCAL
jmp print_on_off
:str asc "LOCAL: ",00
decanm
mx %10
ldy #line_5+4
ldx #:str
jsr print_xy_str
lda DPAGE+DECANM
bmi :100
ldx #:vt52
jmp print_xy_str
:100 ldx #:vt100
jmp print_xy_str
:str asc "DECANM: ",00
:vt100 asc "vt100",00
:vt52 asc "vt52",00
decom
mx %10
ldy #line_6+4
ldx #:str
jsr print_xy_str
lda DPAGE+DECOM
jmp print_on_off
:str asc "DECOM: ",00
deckpam
mx %10
ldy #line_7+4
ldx #:str
jsr print_xy_str
lda DPAGE+DECKPAM
jmp print_on_off
:str asc "DECKPAM: ",00
decckm
mx %10
ldy #line_8+4
ldx #:str
jsr print_xy_str
lda DPAGE+DECCKM
jmp print_on_off
:str asc "DECCKM: ",00
decawm
mx %10
ldy #line_9+4
ldx #:str
jsr print_xy_str
lda DPAGE+DECAWM
jmp print_on_off
:str asc "DECAWM: ",00
decarm
mx %10
ldy #line_10+4
ldx #:str
jsr print_xy_str
lda DPAGE+DECARM
jmp print_on_off
:str asc "DECARM: ",00
decscnm
mx %10
ldy #line_11+4
ldx #:str
jsr print_xy_str
lda DPAGE+DECSCNM
jmp print_on_off
:str asc "DECSCNM: ",00
deccolm
mx %10
ldy #line_12+4
ldx #:str
jsr print_xy_str
lda DPAGE+DECCOLM
jmp print_on_off
:str asc "DECCOLM: ",00
lnm
mx %10
ldy #line_13+4
ldx #:str
jsr print_xy_str
lda DPAGE+LNM
jmp print_on_off
:str asc "LNM: ",00
sgr
mx %10
ldy #line_14+4
ldx #:str
jsr print_xy_str
lda DPAGE+SGR
jmp print_binary
:str asc "SGR: ",00
dectm
mx %10
ldy #line_15+4
ldx #:str
jsr print_xy_str
lda DPAGE+DECTM
inc
jmp print_number
:str asc "DECTM: ",00
decbm
mx %10
ldy #line_16+4
ldx #:str
jsr print_xy_str
lda DPAGE+DECBM
inc
jmp print_number
:str asc "DECBM: ",00
decx
mx %10
ldy #line_17+4
ldx #:str
jsr print_xy_str
lda DPAGE+x
and #$7f
inc
jmp print_number
:str asc "X: ",00
decy
mx %10
ldy #line_18+4
ldx #:str
jsr print_xy_str
lda DPAGE+y
inc
jmp print_number
:str asc "Y: ",00
print_xy_str
mx %10
:loop lda |$0,x
beq :end
sta |$0,y
inx
iny
bra :loop
:end
rts
print_on_off
mx %10
bmi :set
ldx #:off
jmp print_xy_str
:set ldx #:on
jmp print_xy_str
:on asc "on",00
:off asc "off",00
print_number
debug print_number
*
* print a base-10 number, 0-255
* a = #
mx %10
ldx #0
:100
cmp #100
bcc :10x
inx
* sec
sbc #100
bra :100
:10x
cpx #0
beq :10
pha
txa
* clc
* adc #"0"
ora #"0"
sta |$0,y
iny
pla
ldx #0
:10
cmp #10
bcc :1x
inx
sbc #10
bra :10
:1x
cpx #0
beq :1
pha
txa
* clc
* adc #"0"
ora #"0"
sta |$0,y
iny
pla
:1
* clc
* adc #"0"
ora #"0"
sta |$0,y
iny
rts
print_binary
mx %10
* pha
* lda #"%"
* sta |$0,y
* iny
* pla
lup 8
asl
pha
lda #0
adc #"0"
sta |$0,y
iny
pla
--^
rts
print_hex
mx %10
xba
lda #0
xba
pha
lsr
lsr
lsr
lsr
tax
lda hex,x
sta |$0,y
iny
pla
and #$0f
tax
lda hex,x
sta |$0,y
iny
rts
hexdump_r
*
* $1e00 buffer
*
mx %00
lda DPAGE+read_q_tail
sec
sbc #8*16
and #$00ff
ora #$1e00
jmp hexdump_common
hexdump_w
*
* $1d00 buffer
*
mx %00
lda DPAGE+write_q_tail
sec
sbc #8*16
and #$00ff
ora #$1d00
jmp hexdump_common
hexdump_common
*
* a = address to start.
:screen equ 0
:screen2 equ 2
*:offset equ 4
:ptr equ 6
:count equ 8
:row equ 10
:c equ 12
mx %00
debug hexdump
php
sta :ptr
lda #0
* stz :offset
sep #$20
ldx #4*2
stx :row
:one_row
ldx :row
ldy text,x
sty :screen
sty :screen2
lda #8
sta :count
:one_byte
lda (:ptr)
inc :ptr
sta :c
lsr
lsr
lsr
lsr
tax
lda hex,x
ldy :screen
sta |$04,y
iny
lda :c
and #$0f
tax
lda hex,x
sta |$04,y
iny
lda #" "
sta |$04,y
iny
sty :screen
* ascii
ldx #"."
lda :c
cmp #$20
blt :dot
cmp #$80
bcs :dot
ora #$80
tax
:dot
txa
ldy :screen2
sta |8*3+4,y
iny
sty :screen2
dec :count
bne :one_byte
ldx :row
inx
inx
stx :row
cpx #20*2
bcc :one_row
plp
rts
hex asc "0123456789abcdef"
ssc_registers
debug ssc_registers
*
* print SSC read registers. read reg 8 (incoming data byte) is skipped.
*
*
*SCCBREG equ $c038
*SCCAREG equ $c039
*SCCBDATA equ $c03a
*SCCADATA equ $c03b
* read everything at once.
php
sep #$34 ; short m/x, ints off
lda #0
xba
* sei
ldx #0
lda SCCAREG ; sync
lda SCCBREG ; sync
stx SCCAREG
lda SCCAREG
sta ssc_data+0
stx SCCBREG
lda SCCBREG
sta ssc_data+1
inx ;1
stx SCCAREG
lda SCCAREG
sta ssc_data+2
stx SCCBREG
lda SCCBREG
sta ssc_data+3
inx ;2
stx SCCAREG
lda SCCAREG
sta ssc_data+4
stx SCCBREG
lda SCCBREG
sta ssc_data+5
inx ;3
stx SCCAREG
lda SCCAREG
sta ssc_data+6
stx SCCBREG
lda SCCBREG
sta ssc_data+7
ldx #10 ; 10
stx SCCAREG
lda SCCAREG
sta ssc_data+8
stx SCCBREG
lda SCCBREG
sta ssc_data+9
ldx #12 ; 12
stx SCCAREG
lda SCCAREG
sta ssc_data+10
stx SCCBREG
lda SCCBREG
sta ssc_data+11
inx ; 13
stx SCCAREG
lda SCCAREG
sta ssc_data+12
stx SCCBREG
lda SCCBREG
sta ssc_data+13
ldx #15 ; 15
stx SCCAREG
lda SCCAREG
sta ssc_data+14
stx SCCBREG
lda SCCBREG
sta ssc_data+15
cli
rep #$10 ; long x
mx %10
jsr rr0
jsr rr1
jsr rr2
jsr rr3 ; only exists in channel A.
jsr rr10
jsr rr12 ; baud low
* jsr rr13 ; baud high
jsr rr15
plp
rts
ssc_data ds 16
rr0
mx %10
ldy #line_5+4
ldx #:str
jsr print_xy_str
lda ssc_data+0
jsr print_binary
iny
iny
lda ssc_data+1
jmp print_binary
:str asc "RR 0: ",00
rr1
mx %10
ldy #line_6+4
ldx #:str
jsr print_xy_str
lda ssc_data+2
jsr print_binary
iny
iny
lda ssc_data+3
jmp print_binary
:str asc "RR 1: ",00
rr2
mx %10
ldy #line_7+4
ldx #:str
jsr print_xy_str
lda ssc_data+4
jsr print_binary
iny
iny
lda ssc_data+5
jmp print_binary
:str asc "RR 2: ",00
rr3
mx %10
ldy #line_8+4
ldx #:str
jsr print_xy_str
lda ssc_data+6
jsr print_binary
iny
iny
lda ssc_data+7
jmp print_binary
:str asc "RR 3: ",00
rr10
mx %10
ldy #line_9+4
ldx #:str
jsr print_xy_str
lda ssc_data+8
jsr print_binary
iny
iny
lda ssc_data+9
jmp print_binary
:str asc "RR 10: ",00
* 12/13 are baud
rr12
mx %10
ldy #line_10+4
ldx #:str
jsr print_xy_str
iny
iny
iny
iny
lda ssc_data+12
jsr print_hex
lda ssc_data+10
jsr print_hex
iny
iny
iny
iny
iny
iny
lda ssc_data+13
jsr print_hex
lda ssc_data+11
jmp print_hex
:str asc "RR 12: ",00
rr15
mx %10
ldy #line_11+4
ldx #:str
jsr print_xy_str
lda ssc_data+14
jsr print_binary
iny
iny
lda ssc_data+15
jmp print_binary
:str asc "RR 15: ",00
text
dw $0400
dw $0480
dw $0500
dw $0580
dw $0600
dw $0680