Use device masks for DEI
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aeceaf75bf
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3457f665a7
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@ -35,6 +35,7 @@ WITH REGARD TO THIS SOFTWARE.
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#define PUSH(stack, v) { stack->dat[stack->ptr++] = (v); }
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#define PUSH(stack, v) { stack->dat[stack->ptr++] = (v); }
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#define PUSH2(stack, v) { tmp = (v); stack->dat[stack->ptr] = (v) >> 8; stack->dat[stack->ptr + 1] = (v); stack->ptr += 2; }
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#define PUSH2(stack, v) { tmp = (v); stack->dat[stack->ptr] = (v) >> 8; stack->dat[stack->ptr + 1] = (v); stack->ptr += 2; }
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#define SEND(a, b) { u->dev[a] = b; if((send_events[(a) >> 4] >> ((a) & 0xf)) & 0x1) u->deo(u, a); }
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#define SEND(a, b) { u->dev[a] = b; if((send_events[(a) >> 4] >> ((a) & 0xf)) & 0x1) u->deo(u, a); }
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#define LISTEN(a, b) { PUT(a, ((receive_events[(b) >> 4] >> ((b) & 0xf)) & 0x1) ? u->dei(u, b) : u->dev[b]) }
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static
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static
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Uint16 send_events[] = {
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Uint16 send_events[] = {
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@ -42,8 +43,8 @@ Uint16 send_events[] = {
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0x0000, 0x0000, 0xa260, 0xa260, 0x0000, 0x0000, 0x0000, 0x0000 };
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0x0000, 0x0000, 0xa260, 0xa260, 0x0000, 0x0000, 0x0000, 0x0000 };
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static
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static
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Uint16 receive_events[] = {
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Uint16 receive_events[] = {
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0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000,
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0x0000, 0x0000, 0x0014, 0x0014, 0x0014, 0x0014, 0x0014, 0x0000,
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0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000, 0x0000 };
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0x0000, 0x0000, 0x0000, 0x0000, 0x07fd, 0x0000, 0x0000, 0x0000 };
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int
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int
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uxn_eval(Uxn *u, Uint16 pc)
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uxn_eval(Uxn *u, Uint16 pc)
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@ -110,8 +111,8 @@ uxn_eval(Uxn *u, Uint16 pc)
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case 0x14: /* LDA */ t=T2; INC(2,-1) PUT(0, u->ram[t]) break;
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case 0x14: /* LDA */ t=T2; INC(2,-1) PUT(0, u->ram[t]) break;
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case 0x35: /* STA2 */ t=T2;n=N2; DEC(4, 0) POKE16(u->ram + t, n) break;
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case 0x35: /* STA2 */ t=T2;n=N2; DEC(4, 0) POKE16(u->ram + t, n) break;
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case 0x15: /* STA */ t=T2;n=L; DEC(3, 0) u->ram[t] = n; break;
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case 0x15: /* STA */ t=T2;n=L; DEC(3, 0) u->ram[t] = n; break;
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case 0x36: /* DEI2 */ t=T; INC(1, 1) PUT(1, u->dei(u, t)) PUT(0, u->dei(u, t + 1)) break;
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case 0x36: /* DEI2 */ t=T; INC(1, 1) LISTEN(1, t) LISTEN(0, t + 1) break;
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case 0x16: /* DEI */ t=T; INC(1, 0) PUT(0, u->dei(u, t)) break;
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case 0x16: /* DEI */ t=T; INC(1, 0) LISTEN(0, t) break;
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case 0x37: /* DEO2 */ t=T;n=N;l=L; DEC(3, 0) SEND(t, l) SEND(t + 1, n) break;
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case 0x37: /* DEO2 */ t=T;n=N;l=L; DEC(3, 0) SEND(t, l) SEND(t + 1, n) break;
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case 0x17: /* DEO */ t=T;n=N; DEC(2, 0) SEND(t, n) break;
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case 0x17: /* DEO */ t=T;n=N; DEC(2, 0) SEND(t, n) break;
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case 0x38: /* ADD2 */ t=T2;n=N2; INC(4,-2) PUT2(0, n + t) break;
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case 0x38: /* ADD2 */ t=T2;n=N2; INC(4,-2) PUT2(0, n + t) break;
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@ -50,8 +50,7 @@ console_deo(Uint8 *d, Uint8 port)
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static Uint8
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static Uint8
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emu_dei(Uxn *u, Uint8 addr)
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emu_dei(Uxn *u, Uint8 addr)
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{
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{
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Uint8 p = addr & 0x0f, d = addr & 0xf0;
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switch(addr & 0xf0) {
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switch(d) {
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case 0xc0: return datetime_dei(u, addr);
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case 0xc0: return datetime_dei(u, addr);
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}
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}
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return u->dev[addr];
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return u->dev[addr];
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