mirror of
https://github.com/86Box/86Box.git
synced 2026-02-25 04:45:31 -07:00
5318bc08d8
Merged floppy.c and fdd.c and renamed floppy_*.c (the floppy image format handlers) to fdd_*.c; Reading the AT or PS/2 keyboard controller status no longer clears the transmit timeout bit, fixes error 8601 (mouse error) on the IBM PS/2 Model 80; MMU translate and DMA physical reads and writes now go through _mem_exec instead of directly to ram[], should fix the last remaining problems with remapped mappings; Implemented the Sound gain dialog; Added the resource for the "New floppy image" dialog and the needed functions for the functionality of exporting the currently mounted floppy image as 86F, both of which should be finished in the next commit; Applied the CD-ROM fixes from the PCem commit; Added the "Keep ratio" option for full screen stretch.
110 lines
2.9 KiB
C
110 lines
2.9 KiB
C
/* Copyright holders: Sarah Walker
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see COPYING for more details
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*/
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/*This is the chipset used in the AMI 286 clone model*/
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <wchar.h>
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#include "../86box.h"
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#include "../device.h"
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#include "../io.h"
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#include "../keyboard.h"
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#include "../floppy/fdd.h"
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#include "../floppy/fdc.h"
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#include "machine.h"
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static uint8_t neat_regs[256];
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static int neat_index;
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static int neat_emspage[4];
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static void neat_write(uint16_t port, uint8_t val, void *priv)
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{
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switch (port)
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{
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case 0x22:
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neat_index = val;
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break;
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case 0x23:
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neat_regs[neat_index] = val;
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switch (neat_index)
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{
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case 0x6E: /*EMS page extension*/
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neat_emspage[3] = (neat_emspage[3] & 0x7F) | (( val & 3) << 7);
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neat_emspage[2] = (neat_emspage[2] & 0x7F) | (((val >> 2) & 3) << 7);
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neat_emspage[1] = (neat_emspage[1] & 0x7F) | (((val >> 4) & 3) << 7);
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neat_emspage[0] = (neat_emspage[0] & 0x7F) | (((val >> 6) & 3) << 7);
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break;
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}
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break;
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case 0x0208: case 0x0209: case 0x4208: case 0x4209:
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case 0x8208: case 0x8209: case 0xC208: case 0xC209:
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neat_emspage[port >> 14] = (neat_emspage[port >> 14] & 0x180) | (val & 0x7F);
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break;
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}
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}
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static uint8_t neat_read(uint16_t port, void *priv)
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{
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switch (port)
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{
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case 0x22:
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return neat_index;
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case 0x23:
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return neat_regs[neat_index];
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}
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return 0xff;
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}
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#if NOT_USED
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static void neat_writeems(uint32_t addr, uint8_t val)
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{
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ram[(neat_emspage[(addr >> 14) & 3] << 14) + (addr & 0x3FFF)] = val;
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}
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static uint8_t neat_readems(uint32_t addr)
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{
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return ram[(neat_emspage[(addr >> 14) & 3] << 14) + (addr & 0x3FFF)];
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}
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#endif
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static void neat_init(void)
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{
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io_sethandler(0x0022, 0x0002, neat_read, NULL, NULL, neat_write, NULL, NULL, NULL);
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io_sethandler(0x0208, 0x0002, neat_read, NULL, NULL, neat_write, NULL, NULL, NULL);
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io_sethandler(0x4208, 0x0002, neat_read, NULL, NULL, neat_write, NULL, NULL, NULL);
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io_sethandler(0x8208, 0x0002, neat_read, NULL, NULL, neat_write, NULL, NULL, NULL);
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io_sethandler(0xc208, 0x0002, neat_read, NULL, NULL, neat_write, NULL, NULL, NULL);
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}
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void
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machine_at_neat_init(machine_t *model)
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{
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machine_at_init(model);
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device_add(&fdc_at_device);
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neat_init();
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}
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void
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machine_at_neat_ami_init(machine_t *model)
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{
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machine_at_common_init(model);
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device_add(&keyboard_at_ami_device);
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device_add(&fdc_at_device);
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neat_init();
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}
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