76 lines
1.9 KiB
C
76 lines
1.9 KiB
C
/*PRD format :
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word 0 - base address
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word 1 - bits 1 - 15 = byte count, bit 31 = end of transfer
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*/
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#include <string.h>
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#include "ibm.h"
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#include "ide.h"
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#include "io.h"
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#include "mem.h"
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#include "pci.h"
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#include "sio.h"
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static uint8_t card_sio[256];
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void sio_write(int func, int addr, uint8_t val, void *priv)
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{
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// pclog("sio_write: func=%d addr=%02x val=%02x %04x:%08x\n", func, addr, val, CS, pc);
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if ((addr & 0xff) < 4) return;
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if (func > 0)
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return;
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if (func == 0)
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{
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switch (addr)
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{
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case 0x00: case 0x01: case 0x02: case 0x03:
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case 0x08: case 0x09: case 0x0a: case 0x0b:
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case 0x0e:
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return;
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}
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card_sio[addr] = val;
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}
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}
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uint8_t sio_read(int func, int addr, void *priv)
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{
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// pclog("sio_read: func=%d addr=%02x %04x:%08x\n", func, addr, CS, pc);
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if (func > 0)
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return 0xff;
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return card_sio[addr];
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}
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void sio_init(int card)
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{
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pci_add_specific(card, sio_read, sio_write, NULL);
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memset(card_sio, 0, 256);
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card_sio[0x00] = 0x86; card_sio[0x01] = 0x80; /*Intel*/
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card_sio[0x02] = 0x84; card_sio[0x03] = 0x04; /*82378ZB (SIO)*/
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card_sio[0x04] = 0x07; card_sio[0x05] = 0x00;
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card_sio[0x06] = 0x00; card_sio[0x07] = 0x02;
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card_sio[0x08] = 0x00; /*A0 stepping*/
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card_sio[0x40] = 0x20;
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card_sio[0x42] = 0x24;
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card_sio[0x45] = 0x10;
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card_sio[0x46] = 0x0F;
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card_sio[0x48] = 0x01;
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card_sio[0x4A] = 0x10;
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card_sio[0x4B] = 0x0F;
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card_sio[0x4C] = 0x56;
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card_sio[0x4D] = 0x40;
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card_sio[0x4E] = 0x07;
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card_sio[0x4F] = 0x4F;
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card_sio[0x60] = card_sio[0x61] = card_sio[0x62] = card_sio[0x63] = 0x80;
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card_sio[0x80] = 0x78;
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card_sio[0xA0] = 0x08;
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card_sio[0xA8] = 0x0F;
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}
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