Add system-specific boot symbols and CPU instruction tests

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.
2025-05-02 17:33:07 +01:00
parent ae44d43175
commit 918c9020b5
74 changed files with 5037 additions and 7 deletions
--- a/cpu_instrs/source/03-op
+++ b/cpu_instrs/source/03-op
@@ -0,0 +1,102 @@
+; Tests SP/HL instructions
+
+;.define PRINT_CHECKSUMS 1
+.include "shell.inc"
+.include "instr_test.s"
+
+instrs:
+     .byte $33,0,0     ; INC  SP
+     .byte $3B,0,0     ; DEC  SP
+     .byte $39,0,0     ; ADD  HL,SP
+     .byte $F9,0,0     ; LD   SP,HL
+     .byte $E8,$01,0   ; ADD  SP,1
+     .byte $E8,$FF,0   ; ADD  SP,-1
+     .byte $F8,$01,0   ; LD   HL,SP+1
+     .byte $F8,$FF,0   ; LD   HL,SP-1
+instrs_end:
+
+test_instr:
+     ; C = flags register
+     ld   c,$00
+     call test
+     ld   c,$F0
+     call test
+     ret
+
+test:
+     ; Go through each value for HL
+     ld   hl,values
+hl_loop:
+     ld   e,(hl)
+     inc  hl
+     ld   d,(hl)
+     inc  hl
+     push hl
+     
+     ; Go through each value for SP
+     ld   hl,values
+values_loop:
+     push bc
+     push de
+     push hl
+     
+     push bc
+     pop  af
+     
+     ; Switch stack
+     ld   (temp),sp
+     ld   a,(hl+)
+     ld   h,(hl)
+     ld   l,a
+;    call print_regs
+     ld   sp,hl
+     
+     ; Set registers
+     ld   h,d
+     ld   l,e
+     ld   a,$12
+     ld   bc,$5691
+     ld   de,$9ABC
+     
+     jp   instr
+instr_done:
+     ; Save new SP and switch to yet another stack
+     ld   (temp+2),sp
+     ld   sp,$DF70
+     
+     call checksum_af_bc_de_hl
+     
+     ; Checksum SP
+     ld   a,(temp+2)
+     call update_crc_fast
+     ld   a,(temp+3)
+     call update_crc_fast
+     
+     ldsp temp
+     
+     pop  hl
+     pop  de
+     pop  bc
+     inc  hl
+     inc  hl
+     ld   a,l
+     cp   <values_end
+     jr   nz,values_loop
+     
+     pop  hl
+     ld   a,l
+     cp   <values_end
+     jr   nz,hl_loop
+     
+     ret
+
+values:
+     .word $0000,$0001,$000F,$0010,$001F,$007F,$0080,$00FF
+     .word $0100,$0F00,$1F00,$1000,$7FFF,$8000,$FFFF
+values_end:
+     .word $0000,$0001,$000F,$0010,$001F,$007F,$0080,$00FF
+     .word $0100,$0F00,$1F00,$1000,$7FFF,$8000,$FFFF
+
+checksums:
+     .byte $BC,$F4,$CD,$8C,$C7,$5E,$89,$E5,$36,$65,$21,$55,$D6,$6A,$2A,$FF
+     .byte $EB,$34,$37,$B9,$08,$5F,$22,$13,$B6,$2A,$37,$C3,$72,$43,$5C,$4D