screen/auto: Replace draft looping with block width control.
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@ -18,7 +18,7 @@
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#35 .Screen/auto DEO
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#35 .Screen/auto DEO
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;font #0210 ADD2 .Screen/addr DEO2
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;font #0210 ADD2 .Screen/addr DEO2
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#3400 &loop
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#0d00 &loop
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#04 .Screen/sprite DEO
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#04 .Screen/sprite DEO
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INC
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INC
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GTHk ,&loop JCN
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GTHk ,&loop JCN
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@ -157,26 +157,24 @@ screen_deo(Device *d, Uint8 port)
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break;
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break;
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}
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}
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case 0xf: {
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case 0xf: {
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Uint16 x, y, addr, auto_i;
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Uint16 x, y, dx, dy, addr;
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Uint8 twobpp = !!(d->dat[0xf] & 0x80);
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Uint8 i, n, twobpp = !!(d->dat[0xf] & 0x80);
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Layer *layer = (d->dat[0xf] & 0x40) ? &uxn_screen.fg : &uxn_screen.bg;
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Layer *layer = (d->dat[0xf] & 0x40) ? &uxn_screen.fg : &uxn_screen.bg;
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DEVPEEK16(x, 0x8);
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DEVPEEK16(x, 0x8);
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DEVPEEK16(y, 0xa);
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DEVPEEK16(y, 0xa);
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DEVPEEK16(addr, 0xc);
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DEVPEEK16(addr, 0xc);
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if(addr > 0xfff8 - twobpp * 8)
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n = d->dat[0x6] >> 4;
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dx = (d->dat[0x6] & 0x01) << 3;
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dy = (d->dat[0x6] & 0x02) << 2;
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if(addr > 0xfff8 - twobpp * 8 * (n + 1))
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return;
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return;
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screen_blit(&uxn_screen, layer, x, y, &d->u->ram[addr], d->dat[0xf] & 0xf, d->dat[0xf] & 0x10, d->dat[0xf] & 0x20, twobpp);
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for(i = 0; i <= n; i++) {
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auto_i = d->dat[0x6] + 0x40;
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screen_blit(&uxn_screen, layer, x + dy * i, y + dx * i, &d->u->ram[addr], d->dat[0xf] & 0xf, d->dat[0xf] & 0x10, d->dat[0xf] & 0x20, twobpp);
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if((auto_i >> 6) > ((auto_i & 0x30) >> 4)) {
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addr += (d->dat[0x6] & 0x04) << (1 + twobpp);
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d->dat[0x6] = auto_i & 0x3f;
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DEVPOKE16(0x8, x + ((auto_i & 0x01) << 3) - ((auto_i & 0x02) * (auto_i & 0x30) >> 2));
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DEVPOKE16(0xa, y + ((auto_i & 0x02) << 2) - ((auto_i & 0x01) * (auto_i & 0x30) >> 1));
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} else {
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d->dat[0x6] = auto_i;
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DEVPOKE16(0x8, x + ((auto_i & 0x02) << 2));
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DEVPOKE16(0xa, y + ((auto_i & 0x01) << 3));
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}
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}
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if(auto_i & 0x04) DEVPOKE16(0xc, addr + 8 + twobpp * 8); /* auto addr+length */
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DEVPOKE16(0xc, addr); /* auto addr+length */
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DEVPOKE16(0x8, x + dx); /* auto x+8 */
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DEVPOKE16(0xa, y + dy); /* auto y+8 */
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break;
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break;
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}
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}
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}
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}
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