diff options
Diffstat (limited to 'f65/f65.h')
| -rw-r--r-- | f65/f65.h | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/f65/f65.h b/f65/f65.h deleted file mode 100644 index 2d5a66a..0000000 --- a/f65/f65.h +++ /dev/null @@ -1,129 +0,0 @@ -#include <stdio.h> - -#define u8 unsigned char -#define u16 unsigned short - -extern u8 A, X, Y, S, tmp; /* tmp is result for cmp/cpx/cpy */ -extern u8 mem[1 << 16]; /* 64K */ -extern u8 *stack; /* page 1 */ - -extern unsigned int wtmp; /* wide temporary for adc/sbc */ - -extern u8 CF, ZF, NF; /* flags should really be a bitfield, *shrug* */ - -extern void dump_state(void); -extern void dump_mem(int start, int end); - -#define dump_zp() dump_mem(0, 0xff); -#define dump_stack() dump_mem(0x100, 0x1ff); -#define dump_page(x) dump_mem(x * 0x100, x * 0x100 + 0x1ff); - -#define _ind_y(x) mem[Y + (mem[x] | (mem[x+1] << 8))] - -#define setnz(x) ZF=!x; NF=(x&0x80)!=0; - -#define pha() stack[S--] = A; -#define pla() A = stack[++S]; setnz(A); -#define php() stack[S--] = (NF<<7 | ZF<<1 | CF); -#define plp() tmp = stack[++S]; NF=(tmp&0x80)!=0 ; ZF=(tmp&0x02)!=0; CF=tmp&0x01; - -#define lda_i(x) A=x; setnz(A); -#define ldy_i(x) Y=x; setnz(Y); -#define ldx_i(x) X=x; setnz(X); -#define lda(x) A=mem[x]; setnz(A); -#define ldx(x) X=mem[x]; setnz(X); -#define ldy(x) Y=mem[x]; setnz(Y); -#define lda_abs_x(x) A=mem[x+X]; setnz(A); -#define lda_abs_y(x) A=mem[x+Y]; setnz(A); -#define lda_ind_y(x) A=_ind_y(x); setnz(A); - -#define sta(x) mem[x] = A; -#define sta_abs_x(x) mem[x + X] = A; -#define sta_abs_y(x) mem[x + Y] = A; -#define sta_ind_y(x) _ind_y(x) = A; - -#define stx(x) mem[x] = X; -#define sty(x) mem[x] = Y; - -#define sec() CF=1; -#define clc() CF=0; - -#define tax() X=A; setnz(X); -#define tay() Y=A; setnz(Y); -#define txa() A=X; setnz(A); -#define tya() A=Y; setnz(A); -#define txs() S=X; setnz(S); -/* note: tsx doesn't affect flags */ -#define tsx() X=S; - -#define _ror(x) tmp=x&1; x>>=1; x|=(CF<<7); CF=tmp; setnz(x); -#define _rol(x) tmp=(x&0x80)!=0; x<<=1; x|=CF; CF=tmp; setnz(x); - -#define ror_a() _ror(A); -#define rol_a() _rol(A); -#define ror(x) _ror(mem[x]); -#define rol(x) _rol(mem[x]); - -#define _lsr(x) CF=x&1; x>>=1; setnz(x); -#define _asl(x) CF=(x&0x80)!=0; x<<=1; setnz(x); - -#define lsr_a() _lsr(A); -#define asl_a() _asl(A); -#define lsr(x) _lsr(mem[x]); -#define asl(x) _asl(mem[x]); - -#define inx() X++; setnz(X); -#define iny() Y++; setnz(Y); -#define dex() X--; setnz(X); -#define dey() Y--; setnz(Y); - -#define inc(x) mem[x]++; setnz(mem[x]); -#define dec(x) mem[x]--; setnz(mem[x]); - -#define jsr(x) x(); -#define rts() return; - -#define jmp(x) goto x; -#define bne(x) if(!ZF) goto x; -#define beq(x) if(ZF) goto x; -#define bcc(x) if(!CF) goto x; -#define bcs(x) if(CF) goto x; -#define bpl(x) if(!NF) goto x; -#define bmi(x) if(NF) goto x; - -#define ora_i(x) A|=x; setnz(A); -#define ora(x) A|=mem[x]; setnz(A); - -#define and_i(x) A&=x; setnz(A); -#define and(x) A&=mem[x]; setnz(A); -#define and_abx_x(x) A&=mem[x+X]; setnz(A); -#define and_abs_y(x) A&=mem[x+Y]; setnz(A); -#define and_ind_y(x) A&=_ind_y(x); setnz(A); - -#define eor_i(x) A^=x; setnz(A); -#define eor(x) A^=mem[x]; setnz(A); - -#define adc_i(x) wtmp=A+x+CF; A=wtmp&0xff; CF=(wtmp&0x100)!=0; setnz(A); -#define adc(x) adc_i(mem[x]); -#define adc_abs_x(x) adc_i(mem[x+X]); -#define adc_abs_y(x) adc_i(mem[x+Y]); -#define adc_ind_y(x) adc_i(_ind_y(x)); - -/* TODO: actually check this logic! */ -#define _sub(dst,orig,c,operand) wtmp=orig+(operand^0xff)+c; dst=wtmp&0xff; CF=(wtmp&0x100)!=0; setnz(dst); - -#define sbc_i(x) _sub(A,A,CF,x) -#define sbc(x) _sub(A,A,CF,mem[x]) -#define cmp_i(x) _sub(tmp,A,1,x) -#define cpy_i(x) _sub(tmp,Y,1,x) -#define cpx_i(x) _sub(tmp,X,1,x) -#define cmp(x) cmp_i(mem[x]) -#define cmp_abs_x(x) cmp_i(mem[x+X]) -#define cpy(x) cpy_i(mem[x]) -#define cpx(x) cpx_i(mem[x]) - -#define nop() {} - -/* this should produce a compile error instead */ -// #define brk() nop() - |
