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Allow PCjr FDC to be disabled

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This commit is contained in:
Jasmine Iwanek
2025-09-22 00:22:32 -04:00
parent ec7f6ca760
commit cee8fa0ae4
3 changed files with 14 additions and 3 deletions
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3
src/include/86box/m_pcjr.h
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@@ -66,6 +66,9 @@ typedef struct pcjr_s {
int serial_pos;
uint8_t pa;
uint8_t pb;
uint8_t option_fdc;
pc_timer_t send_delay_timer;
} pcjr_t;

10
src/machine/m_pcjr.c
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@@ -41,6 +41,7 @@
#include <86box/rom.h>
#include <86box/fdd.h>
#include <86box/fdc.h>
#include <86box/fdc_ext.h>
#include <86box/sound.h>
#include <86box/snd_speaker.h>
#include <86box/snd_sn76489.h>
@@ -653,6 +654,8 @@ kbd_read(uint16_t port, void *priv)
case 0x62:
ret = (pcjr->latched ? 1 : 0);
ret |= 0x02; /* Modem card not installed */
if (!pcjr->option_fdc)
ret |= 0x04; /* Diskette card not installed */
if (mem_size < 128)
ret |= 0x08; /* 64k expansion card not installed */
if ((pcjr->pb & 0x08) || (cassette == NULL))
@@ -846,6 +849,8 @@ machine_pcjr_init(UNUSED(const machine_t *model))
pcjr = calloc(1, sizeof(pcjr_t));
pcjr->option_fdc = 0;
is_pcjr = 1;
pic_init_pcjr();
@@ -877,7 +882,10 @@ machine_pcjr_init(UNUSED(const machine_t *model))
nmi_mask = 0x80;
device_add(&fdc_pcjr_device);
if (fdc_current[0] == FDC_INTERNAL) {
device_add(&fdc_pcjr_device);
pcjr->option_fdc = 1;
}
device_add(&ns8250_pcjr_device);
/* So that serial_standalone_init() won't do anything. */

4
src/machine/machine_table.c
View File

@@ -300,7 +300,7 @@ const machine_t machines[] = {
.max_multi = 0
},
.bus_flags = MACHINE_PCJR,
.flags = MACHINE_VIDEO_FIXED | MACHINE_KEYBOARD | MACHINE_CARTRIDGE,
.flags = MACHINE_VIDEO_FIXED | MACHINE_KEYBOARD | MACHINE_CARTRIDGE | MACHINE_FDC,
.ram = {
.min = 64,
.max = 640,
@@ -316,7 +316,7 @@ const machine_t machines[] = {
.gpio_acpi = 0xffffffff,
.device = NULL,
.kbd_device = NULL,
.fdc_device = NULL,
.fdc_device = &fdc_pcjr_device,
.sio_device = NULL,
.vid_device = &pcjr_device,
.snd_device = NULL,