Ajurna
918c9020b5
Introduced symbol files for various Game Boy systems (CGB, AGB, MGB, SGB) to define boot sequences and functionalities. Included CPU instruction behavior tests, with detailed coverage of standard operations and interrupt handling. Added documentation for test execution and internal framework operations.
74 lines
1.4 KiB
PHP
74 lines
1.4 KiB
PHP
; General macros
|
|
|
|
; Reads A from addr, from $FF00 to $FFFF
|
|
; Preserved: F, BC, DE, HL
|
|
; Time: 3 cycles
|
|
.macro lda ARGS addr
|
|
ldh a,(addr - $FF00)
|
|
.endm
|
|
|
|
; Writes A to addr, from $FF00 to $FFFF
|
|
; Preserved: AF, BC, DE, HL
|
|
; Time: 3 cycles
|
|
.macro sta ARGS addr
|
|
ldh (addr - $FF00),a
|
|
.endm
|
|
|
|
; Writes immediate data to addr, from $FF00 to $FFFF
|
|
; Preserved: F, BC, DE, HL
|
|
; Time: 5 cycles
|
|
.macro wreg ARGS addr, data
|
|
ld a,data
|
|
sta addr
|
|
.endm
|
|
|
|
; Calls routine multiple times, with A having the
|
|
; value 'start' the first time, 'start+step' the
|
|
; second time, up to 'end' for the last time.
|
|
; Preserved: BC, DE, HL
|
|
.macro for_loop ; routine,start,end,step
|
|
ld a,\2
|
|
|
|
for_loop\@:
|
|
push af
|
|
call \1
|
|
pop af
|
|
|
|
add \4
|
|
cp <(\3 + \4)
|
|
jr nz,for_loop\@
|
|
.endm
|
|
|
|
; Calls routine n times. The value of A in the routine
|
|
; counts from 0 to n-1.
|
|
; Preserved: BC, DE, HL
|
|
.macro loop_n_times ; routine,n
|
|
for_loop \1,0,\2 - 1,+1
|
|
.endm
|
|
|
|
; Same as for_loop, but counts with 16-bit value in BC.
|
|
; Preserved: DE, HL
|
|
.macro for_loop16 ; routine,start,end,step
|
|
ld bc,\2
|
|
|
|
for_loop16\@:
|
|
push bc
|
|
call \1
|
|
pop bc
|
|
|
|
ld a,c
|
|
add <\4
|
|
ld c,a
|
|
|
|
ld a,b
|
|
adc >\4
|
|
ld b,a
|
|
|
|
cp >(\3+\4)
|
|
jr nz,for_loop16\@
|
|
|
|
ld a,c
|
|
cp <(\3+\4)
|
|
jr nz,for_loop16\@
|
|
.endm
|