80486DX2-66/86Box-fork
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Merge pull request #1947 from jriwanek-forks/uart

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Uart
This commit is contained in:
Miran Grča
2021-12-20 21:58:39 +01:00
committed by GitHub
parent 9e3ad3b79f 055c0ecd69
commit cf54d50561
5 changed files with 71 additions and 28 deletions
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66
src/device/serial.c
View File

@@ -129,7 +129,7 @@ serial_update_ints(serial_t *dev)
}
if (stat && (dev->irq != 0xff) && ((dev->mctrl & 8) || (dev->type == SERIAL_8250_PCJR))) {
if (dev->type >= SERIAL_NS16450)
if (dev->type >= SERIAL_16450)
picintlevel(1 << dev->irq);
else
picint(1 << dev->irq);
@@ -151,9 +151,9 @@ serial_clear_timeout(serial_t *dev)
static void
write_fifo(serial_t *dev, uint8_t dat)
{
serial_log("write_fifo(%08X, %02X, %i, %i)\n", dev, dat, (dev->type >= SERIAL_NS16550) && dev->fifo_enabled, dev->rcvr_fifo_pos & 0x0f);
serial_log("write_fifo(%08X, %02X, %i, %i)\n", dev, dat, (dev->type >= SERIAL_16550) && dev->fifo_enabled, dev->rcvr_fifo_pos & 0x0f);
if ((dev->type >= SERIAL_NS16550) && dev->fifo_enabled) {
if ((dev->type >= SERIAL_16550) && dev->fifo_enabled) {
/* FIFO mode. */
timer_disable(&dev->timeout_timer);
/* Indicate overrun. */
@@ -189,7 +189,7 @@ write_fifo(serial_t *dev, uint8_t dat)
void
serial_write_fifo(serial_t *dev, uint8_t dat)
{
serial_log("serial_write_fifo(%08X, %02X, %i, %i)\n", dev, dat, (dev->type >= SERIAL_NS16550) && dev->fifo_enabled, dev->rcvr_fifo_pos & 0x0f);
serial_log("serial_write_fifo(%08X, %02X, %i, %i)\n", dev, dat, (dev->type >= SERIAL_16550) && dev->fifo_enabled, dev->rcvr_fifo_pos & 0x0f);
if (!(dev->mctrl & 0x10))
write_fifo(dev, dat);
@@ -371,7 +371,7 @@ serial_write(uint16_t addr, uint8_t val, void *p)
dev->int_status &= ~SERIAL_INT_TRANSMIT;
serial_update_ints(dev);
if ((dev->type >= SERIAL_NS16550) && dev->fifo_enabled && (dev->xmit_fifo_pos < 16)) {
if ((dev->type >= SERIAL_16550) && dev->fifo_enabled && (dev->xmit_fifo_pos < 16)) {
/* FIFO mode, begin transmitting. */
timer_on_auto(&dev->transmit_timer, dev->transmit_period);
dev->transmit_enabled |= 1; /* Start moving. */
@@ -396,7 +396,7 @@ serial_write(uint16_t addr, uint8_t val, void *p)
serial_update_ints(dev);
break;
case 2:
if (dev->type >= SERIAL_NS16550) {
if (dev->type >= SERIAL_16550) {
if ((val ^ dev->fcr) & 0x01)
serial_reset_fifo(dev);
dev->fcr = val & 0xf9;
@@ -500,7 +500,7 @@ serial_write(uint16_t addr, uint8_t val, void *p)
serial_update_ints(dev);
break;
case 7:
if (dev->type >= SERIAL_NS16450)
if (dev->type >= SERIAL_16450)
dev->scratch = val;
break;
}
@@ -522,7 +522,7 @@ serial_read(uint16_t addr, void *p)
break;
}
if ((dev->type >= SERIAL_NS16550) && dev->fifo_enabled) {
if ((dev->type >= SERIAL_16550) && dev->fifo_enabled) {
/* FIFO mode. */
serial_clear_timeout(dev);
@@ -718,12 +718,12 @@ serial_set_next_inst(int ni)
void
serial_standalone_init(void) {
for ( ; next_inst < 4; )
device_add_inst(&i8250_device, next_inst + 1);
device_add_inst(&ns8250_device, next_inst + 1);
};
const device_t i8250_device = {
"Intel 8250(-compatible) UART",
const device_t ns8250_device = {
"National Semiconductor 8250(-compatible) UART",
0,
SERIAL_8250,
serial_init, serial_close, NULL,
@@ -731,8 +731,8 @@ const device_t i8250_device = {
NULL
};
const device_t i8250_pcjr_device = {
"Intel 8250(-compatible) UART for PCjr",
const device_t ns8250_pcjr_device = {
"National Semiconductor 8250(-compatible) UART for PCjr",
DEVICE_PCJR,
SERIAL_8250_PCJR,
serial_init, serial_close, NULL,
@@ -743,7 +743,7 @@ const device_t i8250_pcjr_device = {
const device_t ns16450_device = {
"National Semiconductor NS16450(-compatible) UART",
0,
SERIAL_NS16450,
SERIAL_16450,
serial_init, serial_close, NULL,
{ NULL }, serial_speed_changed, NULL,
NULL
@@ -752,7 +752,43 @@ const device_t ns16450_device = {
const device_t ns16550_device = {
"National Semiconductor NS16550(-compatible) UART",
0,
SERIAL_NS16550,
SERIAL_16550,
serial_init, serial_close, NULL,
{ NULL }, serial_speed_changed, NULL,
NULL
};
const device_t ns16650_device = {
"Startech Semiconductor 16650(-compatible) UART",
0,
SERIAL_16650,
serial_init, serial_close, NULL,
{ NULL }, serial_speed_changed, NULL,
NULL
};
const device_t ns16750_device = {
"Texas Instruments 16750(-compatible) UART",
0,
SERIAL_16750,
serial_init, serial_close, NULL,
{ NULL }, serial_speed_changed, NULL,
NULL
};
const device_t ns16850_device = {
"Exar Corporation NS16850(-compatible) UART",
0,
SERIAL_16850,
serial_init, serial_close, NULL,
{ NULL }, serial_speed_changed, NULL,
NULL
};
const device_t ns16950_device = {
"Oxford Semiconductor NS16950(-compatible) UART",
0,
SERIAL_16950,
serial_init, serial_close, NULL,
{ NULL }, serial_speed_changed, NULL,
NULL

23
src/include/86box/serial.h
View File

@@ -6,7 +6,8 @@
*
* This file is part of the 86Box distribution.
*
* Definitions for the NS8250/16450/16550 UART emulation.
* Definitions for the NS8250/16450/16550/16650/16750/16850/16950
* UART emulation.
*
*
*
@@ -22,10 +23,14 @@
# define EMU_SERIAL_H
#define SERIAL_8250 0
#define SERIAL_8250 0
#define SERIAL_8250_PCJR 1
#define SERIAL_NS16450 2
#define SERIAL_NS16550 3
#define SERIAL_16450 2
#define SERIAL_16550 3
#define SERIAL_16650 4
#define SERIAL_16750 5
#define SERIAL_16850 6
#define SERIAL_16950 7
#define SERIAL_FIFO_SIZE 16
@@ -39,8 +44,6 @@
#define SERIAL4_ADDR 0x02e8
#define SERIAL4_IRQ 3
#define MAX_SERIAL 4
struct serial_device_s;
struct serial_s;
@@ -89,10 +92,14 @@ extern void serial_standalone_init(void);
extern void serial_set_clock_src(serial_t *dev, double clock_src);
extern void serial_reset_port(serial_t *dev);
extern const device_t i8250_device;
extern const device_t i8250_pcjr_device;
extern const device_t ns8250_device;
extern const device_t ns8250_pcjr_device;
extern const device_t ns16450_device;
extern const device_t ns16550_device;
extern const device_t ns16650_device;
extern const device_t ns16750_device;
extern const device_t ns16850_device;
extern const device_t ns16950_device;
#endif /*EMU_SERIAL_H*/

2
src/machine/m_at_commodore.c
View File

@@ -112,7 +112,7 @@ machine_at_cmdpc_init(const machine_t *model)
if (fdc_type == FDC_INTERNAL)
device_add(&fdc_at_device);
cmd_uart = device_add(&i8250_device);
cmd_uart = device_add(&ns8250_device);
cbm_io_init();

4
src/machine/m_pcjr.c
View File

@@ -866,8 +866,8 @@ machine_pcjr_init(const machine_t *model)
device_add(&fdc_pcjr_device);
device_add(&i8250_pcjr_device);
serial_set_next_inst(MAX_SERIAL); /* So that serial_standalone_init() won't do anything. */
device_add(&ns8250_pcjr_device);
serial_set_next_inst(SERIAL_MAX); /* So that serial_standalone_init() won't do anything. */
return ret;
}

4
src/machine/m_xt_zenith.c
View File

@@ -153,8 +153,8 @@ machine_xt_z184_init(const machine_t *model)
lpt1_remove(); /* only one parallel port */
lpt2_remove();
lpt1_init(0x278);
device_add(&i8250_device);
serial_set_next_inst(MAX_SERIAL); /* So that serial_standalone_init() won't do anything. */
device_add(&ns8250_device);
serial_set_next_inst(SERIAL_MAX); /* So that serial_standalone_init() won't do anything. */
device_add(&cga_device);