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Fixed bugs with PIC 2, fixes IDE bugs among other things.

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This commit is contained in:
OBattler
2020-01-21 03:47:37 +01:00
parent f662b9f342
commit 2edbc38ec3
1 changed files with 4 additions and 4 deletions
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8
src/pic.c
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@@ -8,7 +8,7 @@
* *
* Implementation of the Intel PIC chip emulation. * Implementation of the Intel PIC chip emulation.
* *
* Version: @(#)pic.c 1.0.6 2020/01/17 * Version: @(#)pic.c 1.0.7 2020/01/21
* *
* Author: Miran Grca, <mgrca8@gmail.com> * Author: Miran Grca, <mgrca8@gmail.com>
* *
@@ -375,17 +375,17 @@ pic2_read(uint16_t addr, void *priv)
{ {
uint8_t ret = 0xff; uint8_t ret = 0xff;
if ((addr == 0x20) && shadow) { if ((addr == 0xa0) && shadow) {
ret = ((pic2.ocw3 & 0x20) >> 5) << 4; ret = ((pic2.ocw3 & 0x20) >> 5) << 4;
ret |= ((pic2.ocw2 & 0x80) >> 7) << 3; ret |= ((pic2.ocw2 & 0x80) >> 7) << 3;
ret |= ((pic2.icw4 & 0x10) >> 4) << 2; ret |= ((pic2.icw4 & 0x10) >> 4) << 2;
ret |= ((pic2.icw4 & 0x02) >> 1) << 1; ret |= ((pic2.icw4 & 0x02) >> 1) << 1;
ret |= ((pic2.icw4 & 0x08) >> 3) << 0; ret |= ((pic2.icw4 & 0x08) >> 3) << 0;
} else if ((addr == 0x21) && shadow) } else if ((addr == 0xa1) && shadow)
ret = ((pic2.vector & 0xf8) >> 3) << 0; ret = ((pic2.vector & 0xf8) >> 3) << 0;
else if (addr & 1) else if (addr & 1)
ret = pic2.mask; ret = pic2.mask;
else if (pic.read) else if (pic2.read)
ret = pic2.ins; ret = pic2.ins;
else else
ret = pic2.pend; ret = pic2.pend;