80486DX2-66/86Box-fork
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Deal with the magic numbers

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Also fix a small trivial style issue
This commit is contained in:
Jasmine Iwanek
2022-10-29 16:50:57 -04:00
parent a20584fee4
commit 7a14b31fcc
1 changed files with 49 additions and 37 deletions
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86
src/disk/hdc_st506_xt.c
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@@ -87,6 +87,18 @@
#include <86box/hdc.h>
#include <86box/hdd.h>
#define ST506_XT_TYPE_XEBEC 0
#define ST506_XT_TYPE_DTC_5150X 1
#define ST506_XT_TYPE_ST11M 11
#define ST506_XT_TYPE_ST11R 12
#define ST506_XT_TYPE_WD1002A_WX1 21
#define ST506_XT_TYPE_WD1002A_27X 23
#define ST506_XT_TYPE_WD1004A_WX1 24
#define ST506_XT_TYPE_WD1004_27X 25
#define ST506_XT_TYPE_WD1004A_27X 26
#define ST506_XT_TYPE_VICTOR_V86P 27
#define ST506_XT_TYPE_TOSHIBA_T1200 28
#define XEBEC_BIOS_FILE "roms/hdd/st506/ibm_xebec_62x0822_1985.bin"
#define DTC_BIOS_FILE "roms/hdd/st506/dtc_cxd21a.bin"
#define ST11_BIOS_FILE_OLD "roms/hdd/st506/st11_bios_vers_1.7.bin"
@@ -394,7 +406,7 @@ get_chs(hdc_t *dev, drive_t *drive)
/* 6 bits are used for the sector number even on the IBM PC controller. */
dev->sector = dev->command[2] & 0x3f;
dev->count = dev->command[4];
if (((dev->type == 11) || (dev->type == 12)) && (dev->command[0] >= 0xf0))
if (((dev->type == ST506_XT_TYPE_ST11M) || (dev->type == ST506_XT_TYPE_ST11R)) && (dev->command[0] >= 0xf0))
dev->cylinder = 0;
else {
dev->cylinder = dev->command[3] | ((dev->command[2] & 0xc0) << 2);
@@ -565,7 +577,7 @@ st506_callback(void *priv)
break;
case CMD_FORMAT_ST11: /* This is really "Format cylinder 0" */
if ((dev->type < 11) || (dev->type > 12)) {
if ((dev->type < ST506_XT_TYPE_ST11M) || (dev->type > ST506_XT_TYPE_ST11R)) {
st506_error(dev, ERR_BAD_COMMAND);
st506_complete(dev);
break;
@@ -608,7 +620,7 @@ st506_callback(void *priv)
break;
case CMD_GET_GEOMETRY_ST11: /* "Get geometry" is really "Read cylinder 0" */
if ((dev->type < 11) || (dev->type > 12)) {
if ((dev->type < ST506_XT_TYPE_ST11M) || (dev->type > ST506_XT_TYPE_ST11R)) {
st506_error(dev, ERR_BAD_COMMAND);
st506_complete(dev);
break;
@@ -700,11 +712,11 @@ st506_callback(void *priv)
break;
case CMD_SET_GEOMETRY_ST11: /* "Set geometry" is really "Write cylinder 0" */
if (dev->type == 1) {
if (dev->type == ST506_XT_TYPE_DTC_5150X) {
/* DTC sends this... */
st506_complete(dev);
break;
} else if ((dev->type < 11) || (dev->type > 12)) {
} else if ((dev->type < ST506_XT_TYPE_ST11M) || (dev->type > ST506_XT_TYPE_ST11R)) {
st506_error(dev, ERR_BAD_COMMAND);
st506_complete(dev);
break;
@@ -821,7 +833,7 @@ st506_callback(void *priv)
/* For a 615/4/26 we get 666/2/31 geometry. */
st506_xt_log("ST506: drive%i: cyls=%i, heads=%i\n",
dev->drive_sel, drive->cfg_cyl, drive->cfg_hpc);
if ((dev->type >= 23) && (drive->cfg_hpc == 2)) {
if ((dev->type >= ST506_XT_TYPE_VICTOR_V86P) && (drive->cfg_hpc == 2)) {
/*
* On Victor V86P, there's a disagreement between
* the physical geometry, what the controller
@@ -950,7 +962,7 @@ st506_callback(void *priv)
break;
case CMD_INQUIRY_ST11:
if (dev->type == 11 || dev->type == 12)
if (dev->type == ST506_XT_TYPE_ST11M || dev->type == ST506_XT_TYPE_ST11R)
switch (dev->state) {
case STATE_START_COMMAND:
st506_xt_log("ST506: INQUIRY (type=%i)\n", dev->type);
@@ -975,7 +987,7 @@ st506_callback(void *priv)
break;
case CMD_V86P_POWEROFF:
if (dev->type >= 23) {
if (dev->type >= ST506_XT_TYPE_VICTOR_V86P) {
/*
* Main BIOS (not the option ROM on disk) issues this.
* Not much we can do, since we don't have a physical disk
@@ -1017,10 +1029,10 @@ st506_callback(void *priv)
break;
case CMD_SET_STEP_RATE_DTC:
if (dev->type == 1) {
if (dev->type == ST506_XT_TYPE_DTC_5150X) {
/* For DTC, we are done. */
st506_complete(dev);
} else if (dev->type == 11 || dev->type == 12) {
} else if (dev->type == ST506_XT_TYPE_ST11M || dev->type == ST506_XT_TYPE_ST11R) {
/*
* For Seagate ST-11, this is WriteGeometry.
*
@@ -1259,8 +1271,8 @@ mem_write(uint32_t addr, uint8_t val, void *priv)
addr -= dev->bios_addr;
switch (dev->type) {
case 11: /* ST-11M */
case 12: /* ST-11R */
case ST506_XT_TYPE_ST11M: /* ST-11M */
case ST506_XT_TYPE_ST11R: /* ST-11R */
mask = 0x1fff; /* ST-11 decodes RAM on each 8K block */
break;
@@ -1290,7 +1302,7 @@ mem_read(uint32_t addr, void *priv)
addr -= dev->bios_addr;
switch (dev->type) {
case 0: /* Xebec */
case ST506_XT_TYPE_XEBEC: /* Xebec */
if (addr >= 0x001000) {
#ifdef ENABLE_ST506_XT_LOG
st506_xt_log("ST506: Xebec ROM access(0x%06lx)\n", addr);
@@ -1299,7 +1311,7 @@ mem_read(uint32_t addr, void *priv)
}
break;
case 1: /* DTC */
case ST506_XT_TYPE_DTC_5150X: /* DTC */
default:
if (addr >= 0x002000) {
#ifdef ENABLE_ST506_XT_LOG
@@ -1309,8 +1321,8 @@ mem_read(uint32_t addr, void *priv)
}
break;
case 11: /* ST-11M */
case 12: /* ST-11R */
case ST506_XT_TYPE_ST11M: /* ST-11M */
case ST506_XT_TYPE_ST11R: /* ST-11R */
mask = 0x1fff; /* ST-11 decodes RAM on each 8K block */
break;
@@ -1468,20 +1480,20 @@ st506_init(const device_t *info)
dev->nr_err = ERR_NOT_READY;
switch (dev->type) {
case 0: /* Xebec (MFM) */
case ST506_XT_TYPE_XEBEC: /* Xebec (MFM) */
fn = XEBEC_BIOS_FILE;
break;
case 1: /* DTC5150 (MFM) */
case ST506_XT_TYPE_DTC_5150X: /* DTC5150 (MFM) */
fn = DTC_BIOS_FILE;
dev->switches = 0xff;
break;
case 12: /* Seagate ST-11R (RLL) */
case ST506_XT_TYPE_ST11R: /* Seagate ST-11R (RLL) */
dev->spt = RLL_SECTORS;
/*FALLTHROUGH*/
case 11: /* Seagate ST-11M (MFM) */
case ST506_XT_TYPE_ST11M: /* Seagate ST-11M (MFM) */
dev->nr_err = ERR_NOT_AVAILABLE;
dev->switches = 0x01; /* fixed */
dev->misc = device_get_config_int("revision");
@@ -1511,7 +1523,7 @@ st506_init(const device_t *info)
dev->cyl_off = 1;
break;
case 21: /* Western Digital WD1002A-WX1 (MFM) */
case ST506_XT_TYPE_WD1002A_WX1: /* Western Digital WD1002A-WX1 (MFM) */
dev->nr_err = ERR_NOT_AVAILABLE;
fn = WD1002A_WX1_BIOS_FILE;
/* The switches are read in reverse: 0 = closed, 1 = open.
@@ -1524,7 +1536,7 @@ st506_init(const device_t *info)
dev->bios_addr = device_get_config_hex20("bios_addr");
break;
case 22: /* Western Digital WD1002A-27X (RLL) */
case ST506_XT_TYPE_WD1002A_27X: /* Western Digital WD1002A-27X (RLL) */
dev->nr_err = ERR_NOT_AVAILABLE;
fn = WD1002A_27X_BIOS_FILE;
/* The switches are read in reverse: 0 = closed, 1 = open.
@@ -1539,11 +1551,11 @@ st506_init(const device_t *info)
dev->bios_addr = device_get_config_hex20("bios_addr");
break;
case 23: /* Victor V86P (RLL) */
case ST506_XT_TYPE_VICTOR_V86P: /* Victor V86P (RLL) */
fn = VICTOR_V86P_BIOS_FILE;
break;
case 24: /* Toshiba T1200 */
case ST506_XT_TYPE_TOSHIBA_T1200: /* Toshiba T1200 */
fn = NULL;
dev->base = 0x01f0;
dev->switches = 0x0c;
@@ -1580,7 +1592,7 @@ st506_init(const device_t *info)
st506_xt_log("ST506: %i disks loaded.\n", c);
/* For the Xebec, set the switches now. */
if (dev->type == 0)
if (dev->type == ST506_XT_TYPE_XEBEC)
set_switches(dev);
/* Initial "active" drive parameters. */
@@ -1984,7 +1996,7 @@ const device_t st506_xt_xebec_device = {
.name = "IBM PC Fixed Disk Adapter (MFM)",
.internal_name = "st506_xt",
.flags = DEVICE_ISA,
.local = (HDD_BUS_MFM << 8) | 0,
.local = (HDD_BUS_MFM << 8) | ST506_XT_TYPE_XEBEC,
.init = st506_init,
.close = st506_close,
.reset = NULL,
@@ -1998,7 +2010,7 @@ const device_t st506_xt_dtc5150x_device = {
.name = "DTC 5150X MFM Fixed Disk Adapter",
.internal_name = "st506_xt_dtc5150x",
.flags = DEVICE_ISA,
.local = (HDD_BUS_MFM << 8) | 1,
.local = (HDD_BUS_MFM << 8) | ST506_XT_TYPE_DTC_5150X,
.init = st506_init,
.close = st506_close,
.reset = NULL,
@@ -2012,7 +2024,7 @@ const device_t st506_xt_st11_m_device = {
.name = "ST-11M MFM Fixed Disk Adapter",
.internal_name = "st506_xt_st11_m",
.flags = DEVICE_ISA,
.local = (HDD_BUS_MFM << 8) | 11,
.local = (HDD_BUS_MFM << 8) | ST506_XT_TYPE_ST11M,
.init = st506_init,
.close = st506_close,
.reset = NULL,
@@ -2026,7 +2038,7 @@ const device_t st506_xt_st11_r_device = {
.name = "ST-11R RLL Fixed Disk Adapter",
.internal_name = "st506_xt_st11_r",
.flags = DEVICE_ISA,
.local = (HDD_BUS_MFM << 8) | 12,
.local = (HDD_BUS_MFM << 8) | ST506_XT_TYPE_ST11R,
.init = st506_init,
.close = st506_close,
.reset = NULL,
@@ -2040,7 +2052,7 @@ const device_t st506_xt_wd1002a_wx1_device = {
.name = "WD1002A-WX1 MFM Fixed Disk Adapter",
.internal_name = "st506_xt_wd1002a_wx1",
.flags = DEVICE_ISA,
.local = (HDD_BUS_MFM << 8) | 21,
.local = (HDD_BUS_MFM << 8) | ST506_XT_TYPE_WD1002A_WX1,
.init = st506_init,
.close = st506_close,
.reset = NULL,
@@ -2054,7 +2066,7 @@ const device_t st506_xt_wd1002a_27x_device = {
.name = "WD1002A-27X RLL Fixed Disk Adapter",
.internal_name = "st506_xt_wd1002a_27x",
.flags = DEVICE_ISA,
.local = (HDD_BUS_MFM << 8) | 22,
.local = (HDD_BUS_MFM << 8) | ST506_XT_TYPE_WD1002A_27X,
.init = st506_init,
.close = st506_close,
.reset = NULL,
@@ -2068,11 +2080,11 @@ const device_t st506_xt_wd1004a_wx1_device = {
.name = "WD1004A-WX1 MFM Fixed Disk Adapter",
.internal_name = "st506_xt_wd1004a_wx1",
.flags = DEVICE_ISA,
.local = (HDD_BUS_MFM << 8) | 21,
.local = (HDD_BUS_MFM << 8) | ST506_XT_TYPE_WD1004A_WX1,
.init = st506_init,
.close = st506_close,
.reset = NULL,
{ wd1004a_wx1_available },
{ .available = wd1004a_wx1_available },
.speed_changed = NULL,
.force_redraw = NULL,
.config = wd1004a_config
@@ -2082,7 +2094,7 @@ const device_t st506_xt_wd1004_27x_device = {
.name = "WD1004-27X RLL Fixed Disk Adapter",
.internal_name = "st506_xt_wd1004_27x",
.flags = DEVICE_ISA,
.local = (HDD_BUS_MFM << 8) | 22,
.local = (HDD_BUS_MFM << 8) | ST506_XT_TYPE_WD1004_27X,
.init = st506_init,
.close = st506_close,
.reset = NULL,
@@ -2096,7 +2108,7 @@ const device_t st506_xt_wd1004a_27x_device = {
.name = "WD1004a-27X RLL Fixed Disk Adapter",
.internal_name = "st506_xt_wd1004a_27x",
.flags = DEVICE_ISA,
.local = (HDD_BUS_MFM << 8) | 22,
.local = (HDD_BUS_MFM << 8) | ST506_XT_TYPE_WD1004A_27X,
.init = st506_init,
.close = st506_close,
.reset = NULL,
@@ -2110,7 +2122,7 @@ const device_t st506_xt_victor_v86p_device = {
.name = "Victor V86P RLL Fixed Disk Adapter",
.internal_name = "st506_xt_victor_v86p",
.flags = DEVICE_ISA,
.local = (HDD_BUS_MFM << 8) | 23,
.local = (HDD_BUS_MFM << 8) | ST506_XT_TYPE_VICTOR_V86P,
.init = st506_init,
.close = st506_close,
.reset = NULL,
@@ -2124,7 +2136,7 @@ const device_t st506_xt_toshiba_t1200_device = {
.name = "Toshiba T1200 RLL Fixed Disk Adapter",
.internal_name = "st506_xt_toshiba_t1200",
.flags = DEVICE_ISA,
.local = (HDD_BUS_MFM << 8) | 24,
.local = (HDD_BUS_MFM << 8) | ST506_XT_TYPE_TOSHIBA_T1200,
.init = st506_init,
.close = st506_close,
.reset = NULL,