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(uxn.c) Housekeeping

This commit is contained in:
neauoire 2023-11-01 20:37:46 -07:00
parent d28f4f8165
commit 632816a58e
1 changed files with 6 additions and 6 deletions
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12
src/uxn.c
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@ -45,12 +45,12 @@ uxn_eval(Uxn *u, Uint16 pc)
Stack *s = ins & 0x40 ? &u->rst : &u->wst;
switch(ins & 0x1f ? ins & 0x3f : ins) {
/* IMM */
case 0x00: /* BRK */ return 1;
case 0x20: /* JCI */ t=T; SHIFT(-1) if(!t) { pc += 2; break; } /* else fallthrough */
case 0x40: /* JMI */ rr = ram + pc; pc += PEEK2(rr) + 2; break;
case 0x60: /* JSI */ SHIFT( 2) T2_(pc + 2); rr = ram + pc; pc += PEEK2(rr) + 2; break;
case 0x80: /* LIT */ case 0xc0: SHIFT( 1) T = ram[pc++]; break;
case 0xa0: /* LIT2 */ case 0xe0: SHIFT( 2) N = ram[pc++]; T = ram[pc++]; break;
case 0x00: /* BRK */ return 1;
case 0x20: /* JCI */ t=T; SHIFT(-1) if(!t) { pc += 2; break; }
case 0x40: /* JMI */ rr = ram + pc; pc += 2 + PEEK2(rr); break;
case 0x60: /* JSI */ SHIFT( 2) rr = ram + pc; pc += 2; T2_(pc); pc += PEEK2(rr); break;
case 0x80: /* LIT */ case 0xc0: SHIFT( 1) T = ram[pc++]; break;
case 0xa0: /* LIT2 */ case 0xe0: SHIFT( 2) N = ram[pc++]; T = ram[pc++]; 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;