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Implemented the Magitronics B215 Jumper Readout

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Also added a preliminary UMC 8398
This commit is contained in:
Panagiotis
2021-02-08 18:01:43 +02:00
committed by GitHub
parent 259db0979e
commit 3d5072dab2
3 changed files with 72 additions and 4 deletions
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47
src/floppy/fdc_magitronic.c
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@@ -34,12 +34,56 @@
#define ROM_B215 L"roms/floppy/magitronic/Magitronic B215 - BIOS ROM.bin"
#define ROM_ADDR (uint32_t)(device_get_config_hex20("bios_addr") & 0x000fffff)
#define DRIVE_SELECT (int)(real_drive(dev->fdc_controller, i))
typedef struct
{
fdc_t *fdc_controller;
rom_t rom;
} b215_t;
static uint8_t
b215_read(uint16_t addr, void *priv)
{
b215_t *dev = (b215_t *)priv;
/*
Register 3F0h
Bit (3-2) for Drive B:
Bit (1-0) for Drive A:
0: 360KB
1: 1.2MB
2: 720KB
3: 1.44MB
4:
*/
int drive_spec[2];
for (int i = 0; i <= 1; i++)
{
if (fdd_is_525(DRIVE_SELECT))
{
if (!fdd_is_dd(DRIVE_SELECT))
drive_spec[i] = 1;
else if (fdd_doublestep_40(DRIVE_SELECT))
drive_spec[i] = 2;
else
drive_spec[i] = 0;
}
else
{
if (fdd_is_dd(DRIVE_SELECT) && !fdd_is_double_sided(DRIVE_SELECT))
drive_spec[i] = 0;
else if (fdd_is_dd(DRIVE_SELECT) && fdd_is_double_sided(DRIVE_SELECT))
drive_spec[i] = 2;
else
drive_spec[i] = 3;
}
}
return ((drive_spec[1] << 2) | drive_spec[0]) & 0x0f;
}
static void
b215_close(void *priv)
{
@@ -56,7 +100,8 @@ b215_init(const device_t *info)
rom_init(&dev->rom, ROM_B215, ROM_ADDR, 0x2000, 0x1fff, 0, MEM_MAPPING_EXTERNAL);
device_add(&fdc_xt_device);
dev->fdc_controller = device_add(&fdc_um8398_device);
io_sethandler(0x03f0, 1, b215_read, NULL, NULL, NULL, NULL, NULL, dev);
return dev;
}