mirror of
https://git.sr.ht/~rabbits/uxn
synced 2024-11-22 22:05:11 +00:00
(uxn.c) Reconnected old abc core
This commit is contained in:
neauoire
parent
5abea12b46
commit
b35bded3e4
6 changed files with 88 additions and 238 deletions
|
|
@ -1,107 +0,0 @@
|
|||
#include "uxn.h"
|
||||
|
||||
/*
|
||||
Copyright (u) 2022-2023 Devine Lu Linvega, Andrew Alderwick, Andrew Richards
|
||||
|
||||
Permission to use, copy, modify, and distribute this software for any
|
||||
purpose with or without fee is hereby granted, provided that the above
|
||||
copyright notice and this permission notice appear in all copies.
|
||||
|
||||
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
||||
WITH REGARD TO THIS SOFTWARE.
|
||||
*/
|
||||
|
||||
#define HALT(c) { return emu_halt(u, ins, (c), pc - 1); }
|
||||
#define FLIP { s = ins & 0x40 ? &u->wst : &u->rst; }
|
||||
#define JUMP(x) { if(m2) pc = (x); else pc += (Sint8)(x); }
|
||||
#define POKE(x, y) { if(m2) { POKE2(ram + x, y) } else { ram[(x)] = (y); } }
|
||||
#define PEEK(o, x) { if(m2) { o = PEEK2(ram + x); } else o = ram[(x)]; }
|
||||
#define DEVW(p, y) { if(m2) { DEO(p, y >> 8) DEO((p + 1), y) } else { DEO(p, y) } }
|
||||
#define DEVR(o, p) { if(m2) { o = DEI(p) << 8 | DEI(p + 1); } else { o = DEI(p); } }
|
||||
|
||||
#define PUSH1(y) { if(s->ptr == 0xff) HALT(2) s->dat[s->ptr++] = (y); }
|
||||
#define PUSH2(y) { if((tsp = s->ptr) >= 0xfe) HALT(2) t = (y); POKE2(&s->dat[tsp], t); s->ptr = tsp + 2; }
|
||||
#define PUSHx(y) { if(m2) { PUSH2(y) } else { PUSH1(y) } }
|
||||
#define PUSH11(y, z) { if(s->ptr >= 0xfe) HALT(2) s->dat[s->ptr++] = (y); s->dat[s->ptr++] = (z); }
|
||||
#define PUSH22(y, z) { if((tsp = s->ptr) >= 0xfc) HALT(2) POKE2(&s->dat[tsp], (y)); POKE2(&s->dat[tsp+2], (z)); s->ptr = tsp + 4; }
|
||||
#define PUSHxx(y, z) { if(m2) { PUSH22(y, z) } else { PUSH11(y, z) } }
|
||||
|
||||
#define POP1(o) { if(*sp == 0x00) HALT(1) o = s->dat[--*sp]; }
|
||||
#define POP2(o) { if((tsp = *sp) <= 0x01) HALT(1) o = PEEK2(&s->dat[tsp - 2]); *sp = tsp - 2; }
|
||||
#define POPx(o) { if(m2) { POP2(o) } else { POP1(o) } }
|
||||
#define POP11(o, p) { if(*sp <= 0x01) HALT(1) o = s->dat[--*sp]; p = s->dat[--*sp]; }
|
||||
#define POP22(o, p) { if((tsp = *sp) <= 0x03) HALT(1) o = PEEK2(&s->dat[tsp - 2]); p = PEEK2(&s->dat[tsp - 4]); *sp = tsp - 4; }
|
||||
#define POPxx(o, p) { if(m2) { POP22(o, p) } else { POP11(o, p) } }
|
||||
|
||||
int
|
||||
uxn_eval(Uxn *u, Uint16 pc)
|
||||
{
|
||||
Uint8 ins, opc, m2, ksp, tsp, *sp, *ram = u->ram;
|
||||
Uint16 a, b, c, t;
|
||||
Stack *s;
|
||||
if(!pc || u->dev[0x0f]) return 0;
|
||||
for(;;) {
|
||||
ins = ram[pc++];
|
||||
/* modes */
|
||||
opc = ins & 0x1f;
|
||||
m2 = ins & 0x20;
|
||||
s = ins & 0x40 ? &u->rst : &u->wst;
|
||||
if(ins & 0x80) { ksp = s->ptr; sp = &ksp; } else sp = &s->ptr;
|
||||
/* Opcodes */
|
||||
switch(opc - (!opc * (ins >> 5))) {
|
||||
/* Immediate */
|
||||
case -0x0: /* BRK */ return 1;
|
||||
case -0x1: /* JCI */ POP1(b) if(!b) { pc += 2; break; } /* else fallthrough */
|
||||
case -0x2: /* JMI */ pc += PEEK2(ram + pc) + 2; break;
|
||||
case -0x3: /* JSI */ PUSH2(pc + 2) pc += PEEK2(ram + pc) + 2; break;
|
||||
case -0x4: /* LIT */
|
||||
case -0x6: /* LITr */ PUSH1(ram[pc++]) break;
|
||||
case -0x5: /* LIT2 */
|
||||
case -0x7: /* LIT2r */ PUSH2(PEEK2(ram + pc)) pc += 2; break;
|
||||
/* ALU */
|
||||
case 0x01: /* INC */ POPx(a) PUSHx(a + 1) break;
|
||||
case 0x02: /* POP */ POPx(a) break;
|
||||
case 0x03: /* NIP */ POPxx(a, b) PUSHx(a) break;
|
||||
case 0x04: /* SWP */ POPxx(a, b) PUSHxx(a, b) break;
|
||||
case 0x05: /* ROT */ POPxx(a, b) POPx(c) PUSHxx(b, a) PUSHx(c) break;
|
||||
case 0x06: /* DUP */ POPx(a) PUSHxx(a, a) break;
|
||||
case 0x07: /* OVR */ POPxx(a, b) PUSHxx(b, a) PUSHx(b) break;
|
||||
case 0x08: /* EQU */ POPxx(a, b) PUSH1(b == a) break;
|
||||
case 0x09: /* NEQ */ POPxx(a, b) PUSH1(b != a) break;
|
||||
case 0x0a: /* GTH */ POPxx(a, b) PUSH1(b > a) break;
|
||||
case 0x0b: /* LTH */ POPxx(a, b) PUSH1(b < a) break;
|
||||
case 0x0c: /* JMP */ POPx(a) JUMP(a) break;
|
||||
case 0x0d: /* JCN */ POPx(a) POP1(b) if(b) JUMP(a) break;
|
||||
case 0x0e: /* JSR */ POPx(a) FLIP PUSH2(pc) JUMP(a) break;
|
||||
case 0x0f: /* STH */ POPx(a) FLIP PUSHx(a) break;
|
||||
case 0x10: /* LDZ */ POP1(a) PEEK(b, a) PUSHx(b) break;
|
||||
case 0x11: /* STZ */ POP1(a) POPx(b) POKE(a, b) break;
|
||||
case 0x12: /* LDR */ POP1(a) PEEK(b, pc + (Sint8)a) PUSHx(b) break;
|
||||
case 0x13: /* STR */ POP1(a) POPx(b) POKE(pc + (Sint8)a, b) break;
|
||||
case 0x14: /* LDA */ POP2(a) PEEK(b, a) PUSHx(b) break;
|
||||
case 0x15: /* STA */ POP2(a) POPx(b) POKE(a, b) break;
|
||||
case 0x16: /* DEI */ POP1(a) DEVR(b, a) PUSHx(b) break;
|
||||
case 0x17: /* DEO */ POP1(a) POPx(b) DEVW(a, b) break;
|
||||
case 0x18: /* ADD */ POPxx(a, b) PUSHx(b + a) break;
|
||||
case 0x19: /* SUB */ POPxx(a, b) PUSHx(b - a) break;
|
||||
case 0x1a: /* MUL */ POPxx(a, b) PUSHx((Uint32)b * a) break;
|
||||
case 0x1b: /* DIV */ POPxx(a, b) if(!a) HALT(3) PUSHx(b / a) break;
|
||||
case 0x1c: /* AND */ POPxx(a, b) PUSHx(b & a) break;
|
||||
case 0x1d: /* ORA */ POPxx(a, b) PUSHx(b | a) break;
|
||||
case 0x1e: /* EOR */ POPxx(a, b) PUSHx(b ^ a) break;
|
||||
case 0x1f: /* SFT */ POP1(a) POPx(b) PUSHx(b >> (a & 0xf) << (a >> 4)) break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
uxn_boot(Uxn *u, Uint8 *ram)
|
||||
{
|
||||
Uint32 i;
|
||||
char *cptr = (char *)u;
|
||||
for(i = 0; i < sizeof(*u); i++)
|
||||
cptr[i] = 0;
|
||||
u->ram = ram;
|
||||
return 1;
|
||||
|
||||
}
|
||||
|
|
@ -11,34 +11,34 @@ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|||
WITH REGARD TO THIS SOFTWARE.
|
||||
*/
|
||||
|
||||
#define HALT(c) { return emu_halt(u, ins, (c), pc - 1); }
|
||||
#define FLIP { s = ins & 0x40 ? &u->wst : &u->rst; }
|
||||
#define JUMP(x) { if(m2) pc = (x); else pc += (Sint8)(x); }
|
||||
#define POKE(x, y) { if(m2) { POKE2(ram + x, y) } else { ram[(x)] = (y); } }
|
||||
#define POKE(x, y) { if(m2) { POKE2(ram + x, y) } else ram[(x)] = (y); }
|
||||
#define PEEK(o, x) { if(m2) { o = PEEK2(ram + x); } else o = ram[(x)]; }
|
||||
#define PUSH1(y) { if(s->ptr == 0xff) HALT(2) s->dat[s->ptr++] = (y); }
|
||||
#define PUSH2(y) { if((tsp = s->ptr) >= 0xfe) HALT(2) t = (y); POKE2(&s->dat[tsp], t); s->ptr = tsp + 2; }
|
||||
#define PUSHx(y) { if(m2) { PUSH2(y) } else { PUSH1(y) } }
|
||||
#define POP1(o) { if(*sp == 0x00) HALT(1) o = s->dat[--*sp]; }
|
||||
#define POP2(o) { if((tsp = *sp) <= 0x01) HALT(1) o = PEEK2(&s->dat[tsp - 2]); *sp = tsp - 2; }
|
||||
#define POPx(o) { if(m2) { POP2(o) } else { POP1(o) } }
|
||||
#define DEVW(p, y) { if(m2) { DEO(p, y >> 8) DEO((p + 1), y) } else { DEO(p, y) } }
|
||||
#define DEVR(o, p) { if(m2) { o = ((DEI(p) << 8) + DEI(p + 1)); } else { o = DEI(p); } }
|
||||
#define DEVR(o, p) { if(m2) { o = ((emu_dei(u, p) << 8) + emu_dei(u, p + 1)); } else o = emu_dei(u, p); }
|
||||
#define DEVW(p, y) { if(m2) { emu_deo(u, p, y >> 8); emu_deo(u, p + 1, y); } else emu_deo(u, p, y); }
|
||||
#define PUSH1(y) { s->dat[s->ptr++] = (y); }
|
||||
#define PUSH2(y) { t = (y); s->dat[s->ptr++] = t >> 0x8; s->dat[s->ptr++] = t & 0xff; }
|
||||
#define PUSHx(y) { if(m2) { PUSH2(y) } else PUSH1(y) }
|
||||
#define POP1(o) { o = s->dat[--*sp]; }
|
||||
#define POP2(o) { o = s->dat[--*sp] | s->dat[--*sp] << 0x8; }
|
||||
#define POPx(o) { if(m2) { POP2(o) } else POP1(o) }
|
||||
|
||||
int
|
||||
uxn_eval(Uxn *u, Uint16 pc)
|
||||
{
|
||||
Uint8 ins, opc, m2, ksp, tsp, *sp, *ram = u->ram;
|
||||
Uint8 ksp, *sp, *ram = u->ram;
|
||||
Uint16 a, b, c, t;
|
||||
Stack *s;
|
||||
if(!pc || u->dev[0x0f]) return 0;
|
||||
for(;;) {
|
||||
ins = ram[pc++];
|
||||
/* modes */
|
||||
opc = ins & 0x1f;
|
||||
m2 = ins & 0x20;
|
||||
s = ins & 0x40 ? &u->rst : &u->wst;
|
||||
if(ins & 0x80) { ksp = s->ptr; sp = &ksp; } else sp = &s->ptr;
|
||||
Uint8 ins = ram[pc++], opc = ins & 0x1f;
|
||||
Uint8 m2 = ins & 0x20;
|
||||
Stack *s = ins & 0x40 ? &u->rst : &u->wst;
|
||||
if(ins & 0x80) {
|
||||
ksp = s->ptr;
|
||||
sp = &ksp;
|
||||
} else
|
||||
sp = &s->ptr;
|
||||
/* Opcodes */
|
||||
switch(opc - (!opc * (ins >> 5))) {
|
||||
/* Immediate */
|
||||
|
|
@ -77,7 +77,7 @@ uxn_eval(Uxn *u, Uint16 pc)
|
|||
case 0x18: /* ADD */ POPx(a) POPx(b) PUSHx(b + a) break;
|
||||
case 0x19: /* SUB */ POPx(a) POPx(b) PUSHx(b - a) break;
|
||||
case 0x1a: /* MUL */ POPx(a) POPx(b) PUSHx((Uint32)b * a) break;
|
||||
case 0x1b: /* DIV */ POPx(a) POPx(b) if(!a) HALT(3) PUSHx(b / a) break;
|
||||
case 0x1b: /* DIV */ POPx(a) POPx(b) PUSHx(a ? b / a : 0) break;
|
||||
case 0x1c: /* AND */ POPx(a) POPx(b) PUSHx(b & a) break;
|
||||
case 0x1d: /* ORA */ POPx(a) POPx(b) PUSHx(b | a) break;
|
||||
case 0x1e: /* EOR */ POPx(a) POPx(b) PUSHx(b ^ a) break;
|
||||
|
|
@ -85,14 +85,3 @@ uxn_eval(Uxn *u, Uint16 pc)
|
|||
}
|
||||
}
|
||||
}
|
||||
|
||||
int
|
||||
uxn_boot(Uxn *u, Uint8 *ram)
|
||||
{
|
||||
Uint32 i;
|
||||
char *cptr = (char *)u;
|
||||
for(i = 0; i < sizeof(*u); i++)
|
||||
cptr[i] = 0;
|
||||
u->ram = ram;
|
||||
return 1;
|
||||
}
|
||||
|
|
|
|||
162
src/uxn.c
162
src/uxn.c
|
|
@ -11,111 +11,77 @@ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|||
WITH REGARD TO THIS SOFTWARE.
|
||||
*/
|
||||
|
||||
/* Registers
|
||||
[ Z ][ Y ][ X ][ L ][ N ][ T ] <
|
||||
[ . ][ . ][ . ][ H2 ][ . ] <
|
||||
[ L2 ][ N2 ][ T2 ] <
|
||||
*/
|
||||
|
||||
#define T *(s->dat + s->ptr)
|
||||
#define N *(s->dat + (Uint8)(s->ptr - 1))
|
||||
#define L *(s->dat + (Uint8)(s->ptr - 2))
|
||||
#define X *(s->dat + (Uint8)(s->ptr - 3))
|
||||
#define Y *(s->dat + (Uint8)(s->ptr - 4))
|
||||
#define Z *(s->dat + (Uint8)(s->ptr - 5))
|
||||
#define T2 (N << 8 | T)
|
||||
#define H2 (L << 8 | N)
|
||||
#define N2 (X << 8 | L)
|
||||
#define L2 (Z << 8 | Y)
|
||||
#define T2_(v) { r = (v); T = r; N = r >> 8; }
|
||||
#define N2_(v) { r = (v); L = r; X = r >> 8; }
|
||||
#define L2_(v) { r = (v); Y = r; Z = r >> 8; }
|
||||
#define DEI(p) (dei_masks[p] ? emu_dei(u, (p)) : u->dev[(p)])
|
||||
#define DEO(p, v) { u->dev[p] = v; if(deo_masks[p]) emu_deo(u, p); }
|
||||
#define FLIP { s = ins & 0x40 ? &u->wst : &u->rst; }
|
||||
#define SHIFT(y) { s->ptr += (y); }
|
||||
#define SET(x, y) { SHIFT((ins & 0x80) ? x + y : y) }
|
||||
#define FLIP { s = ins & 0x40 ? &u->wst : &u->rst; }
|
||||
#define JUMP(x) { if(m2) pc = (x); else pc += (Sint8)(x); }
|
||||
#define POKE(x, y) { if(m2) { POKE2(ram + x, y) } else ram[(x)] = (y); }
|
||||
#define PEEK(o, x) { if(m2) { o = PEEK2(ram + x); } else o = ram[(x)]; }
|
||||
#define DEVR(o, p) { if(m2) { o = ((emu_dei(u, p) << 8) + emu_dei(u, p + 1)); } else o = emu_dei(u, p); }
|
||||
#define DEVW(p, y) { if(m2) { emu_deo(u, p, y >> 8); emu_deo(u, p + 1, y); } else emu_deo(u, p, y); }
|
||||
#define PUSH1(y) { s->dat[s->ptr++] = (y); }
|
||||
#define PUSH2(y) { t = (y); s->dat[s->ptr++] = t >> 0x8; s->dat[s->ptr++] = t & 0xff; }
|
||||
#define PUSHx(y) { if(m2) { PUSH2(y) } else PUSH1(y) }
|
||||
#define POP1(o) { o = s->dat[--*sp]; }
|
||||
#define POP2(o) { o = s->dat[--*sp] | s->dat[--*sp] << 0x8; }
|
||||
#define POPx(o) { if(m2) { POP2(o) } else POP1(o) }
|
||||
|
||||
int
|
||||
uxn_eval(Uxn *u, Uint16 pc)
|
||||
{
|
||||
int t, n, l, r;
|
||||
Uint8 *ram = u->ram, *rr;
|
||||
Uint8 ksp, *sp, *ram = u->ram;
|
||||
Uint16 a, b, c, t;
|
||||
if(!pc || u->dev[0x0f]) return 0;
|
||||
for(;;) {
|
||||
int ins = ram[pc++];
|
||||
Uint8 ins = ram[pc++], opc = ins & 0x1f;
|
||||
Uint8 m2 = ins & 0x20;
|
||||
Stack *s = ins & 0x40 ? &u->rst : &u->wst;
|
||||
switch(ins & 0x1f ? ins & 0x3f : ins << 4) {
|
||||
/* IMM */
|
||||
case 0x000: /* BRK */ return 1;
|
||||
case 0x200: /* JCI */ t=T; SHIFT(-1) if(!t) { pc += 2; break; } /* else fallthrough */
|
||||
case 0x400: /* JMI */ rr = ram + pc; pc += PEEK2(rr) + 2; break;
|
||||
case 0x600: /* JSI */ SHIFT( 2) T2_(pc + 2); rr = ram + pc; pc += PEEK2(rr) + 2; break;
|
||||
case 0x800: /* LIT */ case 0xc00: SHIFT( 1) T = ram[pc++]; break;
|
||||
case 0xa00: /* LIT2 */ case 0xe00: SHIFT( 2) rr = ram + pc; T2_(PEEK2(rr)) pc += 2; break;
|
||||
/* ALU */
|
||||
case 0x01: /* INC */ t=T; SET(1, 0) T = t + 1; break;
|
||||
case 0x21: /* INC2 */ t=T2; SET(2, 0) T2_(t + 1) break;
|
||||
case 0x02: /* POP */ SET(1,-1) break;
|
||||
case 0x22: /* POP2 */ SET(2,-2) break;
|
||||
case 0x03: /* NIP */ t=T; SET(2,-1) T = t; break;
|
||||
case 0x23: /* NIP2 */ t=T2; SET(4,-2) T2_(t) break;
|
||||
case 0x04: /* SWP */ t=T;n=N; SET(2, 0) T = n; N = t; break;
|
||||
case 0x24: /* SWP2 */ t=T2;n=N2; SET(4, 0) T2_(n) N2_(t) break;
|
||||
case 0x05: /* ROT */ t=T;n=N;l=L; SET(3, 0) T = l; N = t; L = n; break;
|
||||
case 0x25: /* ROT2 */ t=T2;n=N2;l=L2; SET(6, 0) T2_(l) N2_(t) L2_(n) break;
|
||||
case 0x06: /* DUP */ t=T; SET(1, 1) T = t; N = t; break;
|
||||
case 0x26: /* DUP2 */ t=T2; SET(2, 2) T2_(t) N2_(t) break;
|
||||
case 0x07: /* OVR */ t=T;n=N; SET(2, 1) T = n; N = t; L = n; break;
|
||||
case 0x27: /* OVR2 */ t=T2;n=N2; SET(4, 2) T2_(n) N2_(t) L2_(n) break;
|
||||
case 0x08: /* EQU */ t=T;n=N; SET(2,-1) T = n == t; break;
|
||||
case 0x28: /* EQU2 */ t=T2;n=N2; SET(4,-3) T = n == t; break;
|
||||
case 0x09: /* NEQ */ t=T;n=N; SET(2,-1) T = n != t; break;
|
||||
case 0x29: /* NEQ2 */ t=T2;n=N2; SET(4,-3) T = n != t; break;
|
||||
case 0x0a: /* GTH */ t=T;n=N; SET(2,-1) T = n > t; break;
|
||||
case 0x2a: /* GTH2 */ t=T2;n=N2; SET(4,-3) T = n > t; break;
|
||||
case 0x0b: /* LTH */ t=T;n=N; SET(2,-1) T = n < t; break;
|
||||
case 0x2b: /* LTH2 */ t=T2;n=N2; SET(4,-3) T = n < t; break;
|
||||
case 0x0c: /* JMP */ t=T; SET(1,-1) pc += (Sint8)t; break;
|
||||
case 0x2c: /* JMP2 */ t=T2; SET(2,-2) pc = t; break;
|
||||
case 0x0d: /* JCN */ t=T;n=N; SET(2,-2) if(n) pc += (Sint8)t; break;
|
||||
case 0x2d: /* JCN2 */ t=T2;n=L; SET(3,-3) if(n) pc = t; break;
|
||||
case 0x0e: /* JSR */ t=T; SET(1,-1) FLIP SHIFT(2) T2_(pc) pc += (Sint8)t; break;
|
||||
case 0x2e: /* JSR2 */ t=T2; SET(2,-2) FLIP SHIFT(2) T2_(pc) pc = t; break;
|
||||
case 0x0f: /* STH */ t=T; SET(1,-1) FLIP SHIFT(1) T = t; break;
|
||||
case 0x2f: /* STH2 */ t=T2; SET(2,-2) FLIP SHIFT(2) T2_(t) break;
|
||||
case 0x10: /* LDZ */ t=T; SET(1, 0) T = ram[t]; break;
|
||||
case 0x30: /* LDZ2 */ t=T; SET(1, 1) rr = ram + t; T2_(PEEK2(rr)) break;
|
||||
case 0x11: /* STZ */ t=T;n=N; SET(2,-2) ram[t] = n; break;
|
||||
case 0x31: /* STZ2 */ t=T;n=H2; SET(3,-3) rr = ram + t; POKE2(rr, n) break;
|
||||
case 0x12: /* LDR */ t=T; SET(1, 0) T = ram[pc + (Sint8)t]; break;
|
||||
case 0x32: /* LDR2 */ t=T; SET(1, 1) rr = ram + pc + (Sint8)t; T2_(PEEK2(rr)) break;
|
||||
case 0x13: /* STR */ t=T;n=N; SET(2,-2) ram[pc + (Sint8)t] = n; break;
|
||||
case 0x33: /* STR2 */ t=T;n=H2; SET(3,-3) rr = ram + pc + (Sint8)t; POKE2(rr, n) break;
|
||||
case 0x14: /* LDA */ t=T2; SET(2,-1) T = ram[t]; break;
|
||||
case 0x34: /* LDA2 */ t=T2; SET(2, 0) rr = ram + t; T2_(PEEK2(rr)) break;
|
||||
case 0x15: /* STA */ t=T2;n=L; SET(3,-3) ram[t] = n; break;
|
||||
case 0x35: /* STA2 */ t=T2;n=N2; SET(4,-4) rr = ram + t; POKE2(rr, n) break;
|
||||
case 0x16: /* DEI */ t=T; SET(1, 0) T = DEI(t); break;
|
||||
case 0x36: /* DEI2 */ t=T; SET(1, 1) T = DEI(t + 1); N = DEI(t); break;
|
||||
case 0x17: /* DEO */ t=T;n=N; SET(2,-2) DEO(t, n) break;
|
||||
case 0x37: /* DEO2 */ t=T;n=N;l=L; SET(3,-3) DEO(t, l) DEO((t + 1), n) break;
|
||||
case 0x18: /* ADD */ t=T;n=N; SET(2,-1) T = n + t; break;
|
||||
case 0x38: /* ADD2 */ t=T2;n=N2; SET(4,-2) T2_(n + t) break;
|
||||
case 0x19: /* SUB */ t=T;n=N; SET(2,-1) T = n - t; break;
|
||||
case 0x39: /* SUB2 */ t=T2;n=N2; SET(4,-2) T2_(n - t) break;
|
||||
case 0x1a: /* MUL */ t=T;n=N; SET(2,-1) T = n * t; break;
|
||||
case 0x3a: /* MUL2 */ t=T2;n=N2; SET(4,-2) T2_(n * t) break;
|
||||
case 0x1b: /* DIV */ t=T;n=N; SET(2,-1) T = t ? n / t : 0; break;
|
||||
case 0x3b: /* DIV2 */ t=T2;n=N2; SET(4,-2) T2_(t ? n / t : 0) break;
|
||||
case 0x1c: /* AND */ t=T;n=N; SET(2,-1) T = n & t; break;
|
||||
case 0x3c: /* AND2 */ t=T2;n=N2; SET(4,-2) T2_(n & t) break;
|
||||
case 0x1d: /* ORA */ t=T;n=N; SET(2,-1) T = n | t; break;
|
||||
case 0x3d: /* ORA2 */ t=T2;n=N2; SET(4,-2) T2_(n | t) break;
|
||||
case 0x1e: /* EOR */ t=T;n=N; SET(2,-1) T = n ^ t; break;
|
||||
case 0x3e: /* EOR2 */ t=T2;n=N2; SET(4,-2) T2_(n ^ t) break;
|
||||
case 0x1f: /* SFT */ t=T;n=N; SET(2,-1) T = n >> (t & 0xf) << (t >> 4); break;
|
||||
case 0x3f: /* SFT2 */ t=T;n=H2; SET(3,-1) T2_(n >> (t & 0xf) << (t >> 4)) break;
|
||||
if(ins & 0x80) {
|
||||
ksp = s->ptr;
|
||||
sp = &ksp;
|
||||
} else
|
||||
sp = &s->ptr;
|
||||
/* Opcodes */
|
||||
switch(opc - (!opc * (ins >> 5))) {
|
||||
/* Immediate */
|
||||
case -0x0: /* BRK */ return 1;
|
||||
case -0x1: /* JCI */ POP1(b) if(!b) { pc += 2; break; } /* else fallthrough */
|
||||
case -0x2: /* JMI */ pc += PEEK2(ram + pc) + 2; break;
|
||||
case -0x3: /* JSI */ PUSH2(pc + 2) pc += PEEK2(ram + pc) + 2; break;
|
||||
case -0x4: /* LIT */
|
||||
case -0x6: /* LITr */ PUSH1(ram[pc++]) break;
|
||||
case -0x5: /* LIT2 */
|
||||
case -0x7: /* LIT2r */ PUSH2(PEEK2(ram + pc)) pc += 2; break;
|
||||
/* ALU */
|
||||
case 0x01: /* INC */ POPx(a) PUSHx(a + 1) break;
|
||||
case 0x02: /* POP */ POPx(a) break;
|
||||
case 0x03: /* NIP */ POPx(a) POPx(b) PUSHx(a) break;
|
||||
case 0x04: /* SWP */ POPx(a) POPx(b) PUSHx(a) PUSHx(b) break;
|
||||
case 0x05: /* ROT */ POPx(a) POPx(b) POPx(c) PUSHx(b) PUSHx(a) PUSHx(c) break;
|
||||
case 0x06: /* DUP */ POPx(a) PUSHx(a) PUSHx(a) break;
|
||||
case 0x07: /* OVR */ POPx(a) POPx(b) PUSHx(b) PUSHx(a) PUSHx(b) break;
|
||||
case 0x08: /* EQU */ POPx(a) POPx(b) PUSH1(b == a) break;
|
||||
case 0x09: /* NEQ */ POPx(a) POPx(b) PUSH1(b != a) break;
|
||||
case 0x0a: /* GTH */ POPx(a) POPx(b) PUSH1(b > a) break;
|
||||
case 0x0b: /* LTH */ POPx(a) POPx(b) PUSH1(b < a) break;
|
||||
case 0x0c: /* JMP */ POPx(a) JUMP(a) break;
|
||||
case 0x0d: /* JCN */ POPx(a) POP1(b) if(b) JUMP(a) break;
|
||||
case 0x0e: /* JSR */ POPx(a) FLIP PUSH2(pc) JUMP(a) break;
|
||||
case 0x0f: /* STH */ POPx(a) FLIP PUSHx(a) break;
|
||||
case 0x10: /* LDZ */ POP1(a) PEEK(b, a) PUSHx(b) break;
|
||||
case 0x11: /* STZ */ POP1(a) POPx(b) POKE(a, b) break;
|
||||
case 0x12: /* LDR */ POP1(a) PEEK(b, pc + (Sint8)a) PUSHx(b) break;
|
||||
case 0x13: /* STR */ POP1(a) POPx(b) POKE(pc + (Sint8)a, b) break;
|
||||
case 0x14: /* LDA */ POP2(a) PEEK(b, a) PUSHx(b) break;
|
||||
case 0x15: /* STA */ POP2(a) POPx(b) POKE(a, b) break;
|
||||
case 0x16: /* DEI */ POP1(a) DEVR(b, a) PUSHx(b) break;
|
||||
case 0x17: /* DEO */ POP1(a) POPx(b) DEVW(a, b) break;
|
||||
case 0x18: /* ADD */ POPx(a) POPx(b) PUSHx(b + a) break;
|
||||
case 0x19: /* SUB */ POPx(a) POPx(b) PUSHx(b - a) break;
|
||||
case 0x1a: /* MUL */ POPx(a) POPx(b) PUSHx((Uint32)b * a) break;
|
||||
case 0x1b: /* DIV */ POPx(a) POPx(b) PUSHx(a ? b / a : 0) break;
|
||||
case 0x1c: /* AND */ POPx(a) POPx(b) PUSHx(b & a) break;
|
||||
case 0x1d: /* ORA */ POPx(a) POPx(b) PUSHx(b | a) break;
|
||||
case 0x1e: /* EOR */ POPx(a) POPx(b) PUSHx(b ^ a) break;
|
||||
case 0x1f: /* SFT */ POP1(a) POPx(b) PUSHx(b >> (a & 0xf) << (a >> 4)) break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -36,7 +36,7 @@ typedef struct Uxn {
|
|||
/* required functions */
|
||||
|
||||
extern Uint8 emu_dei(Uxn *u, Uint8 addr);
|
||||
extern void emu_deo(Uxn *u, Uint8 addr);
|
||||
extern void emu_deo(Uxn *u, Uint8 addr, Uint8 value);
|
||||
extern Uint8 dei_masks[0x100], deo_masks[0x100];
|
||||
extern Uint16 dev_vers[0x10], dei_mask[0x10], deo_mask[0x10];
|
||||
|
||||
|
|
|
|||
|
|
@ -29,9 +29,10 @@ emu_dei(Uxn *u, Uint8 addr)
|
|||
}
|
||||
|
||||
void
|
||||
emu_deo(Uxn *u, Uint8 addr)
|
||||
emu_deo(Uxn *u, Uint8 addr, Uint8 value)
|
||||
{
|
||||
Uint8 p = addr & 0x0f, d = addr & 0xf0;
|
||||
u->dev[addr] = value;
|
||||
switch(d) {
|
||||
case 0x00: system_deo(u, &u->dev[d], p); break;
|
||||
case 0x10: console_deo(&u->dev[d], p); break;
|
||||
|
|
|
|||
|
|
@ -112,9 +112,10 @@ emu_dei(Uxn *u, Uint8 addr)
|
|||
}
|
||||
|
||||
void
|
||||
emu_deo(Uxn *u, Uint8 addr)
|
||||
emu_deo(Uxn *u, Uint8 addr, Uint8 value)
|
||||
{
|
||||
Uint8 p = addr & 0x0f, d = addr & 0xf0;
|
||||
u->dev[addr] = value;
|
||||
switch(d) {
|
||||
case 0x00:
|
||||
system_deo(u, &u->dev[d], p);
|
||||
|
|
|
|||
Loading…
Reference in a new issue