fake_bios: use custom wait so not using ROM

This commit is contained in:
Vince Weaver 2023-08-29 00:14:01 -04:00
parent 9aa045e297
commit cb9795c6e4
3 changed files with 29 additions and 7 deletions

View File

@ -28,7 +28,7 @@ fake_bios.o: fake_bios.s \
font_console_1x8.s fonts/a2_cga_thin.inc \
pt3_lib_detect_model.s lc_detect.s aux_detect.s \
65c02_detect.s pt3_lib_mockingboard_detect.s \
pt3_lib_mockingboard_setup.s \
pt3_lib_mockingboard_setup.s wait.s \
zx02_optim.s graphics/a2_energy.hgr.zx02
ca65 -o fake_bios.o fake_bios.s -l fake_bios.lst

View File

@ -257,7 +257,7 @@ memcount_loop:
bmi done_memcount ; 3
lda #100
jsr WAIT
jsr wait
jsr increment_memory
dec MEMCOUNT
@ -289,13 +289,13 @@ done_memcount:
jsr fade_logo_mask
lda #200
jsr WAIT
jsr wait
lda #$33
jsr fade_logo_mask
lda #200
jsr WAIT
jsr wait
; clear screen while offscreen
; avoid blinds effect
@ -658,7 +658,7 @@ dos_command_inner:
jsr DrawCondensedString
dec CH
lda #200
jsr WAIT
jsr wait
lda KEYPRESS
bmi dos_keypress
@ -666,7 +666,7 @@ dos_command_inner:
jsr DrawCondensedStringAgain
dec CH
lda #200
jsr WAIT
jsr wait
lda KEYPRESS
bmi dos_keypress
@ -736,7 +736,7 @@ inner_loop_smc2:
; in X
long_wait:
lda #200
jsr WAIT
jsr wait
lda KEYPRESS
bmi early_out
@ -758,3 +758,7 @@ early_out:
.include "65c02_detect.s"
.include "pt3_lib_mockingboard_setup.s"
.include "pt3_lib_mockingboard_detect.s"
.include "wait.s"

View File

@ -0,0 +1,18 @@
; copy of ROM wait
; because we might disable ROM
wait:
sec
wait2:
pha
wait3:
sbc #$01
bne wait3
pla
sbc #$01
bne wait2
rts
wait_end:
.assert (>wait_end - >wait) < 1 , error, "wait crosses page boundary"