claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

NEAT: Mirror EMS port 2x8h on port 2x9h for reads as well, fixes EMS detection by Chips Expanded Manager version 2.2.0.

Browse Source
This commit is contained in:
OBattler
2025-02-17 01:27:40 +01:00
parent 3d8bc79772
commit 63b223973c
1 changed files with 33 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

59
src/chipset/neat.c
View File

@@ -34,8 +34,6 @@
#include <86box/plat_unused.h>
#include <86box/chipset.h>
#define NEAT_DEBUG 0
#define EMS_MAXPAGE 4
#define EMS_PGSIZE 16384
#define EMS_PGMASK 16383
@@ -328,7 +326,7 @@ ems_readb(uint32_t addr, void *priv)
{
ram_page_t *dev = (ram_page_t *) priv;
uint8_t ret = 0xff;
#ifdef ENABLE_NEAT_LOG
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 3)
uint32_t old = addr;
#endif
@@ -338,7 +336,9 @@ ems_readb(uint32_t addr, void *priv)
if (addr < (mem_size << 10))
ret = *(uint8_t *) &(ram[addr]);
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 3)
neat_log("[R08] %08X -> %08X (%08X): ret = %02X\n", old, addr, (mem_size << 10), ret);
#endif
return ret;
}
@@ -348,7 +348,7 @@ ems_readw(uint32_t addr, void *priv)
{
ram_page_t *dev = (ram_page_t *) priv;
uint16_t ret = 0xffff;
#ifdef ENABLE_NEAT_LOG
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 3)
uint32_t old = addr;
#endif
@@ -358,7 +358,9 @@ ems_readw(uint32_t addr, void *priv)
if (addr < (mem_size << 10))
ret = *(uint16_t *) &(ram[addr]);
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 3)
neat_log("[R16] %08X -> %08X (%08X): ret = %04X\n", old, addr, (mem_size << 10), ret);
#endif
return ret;
}
@@ -367,13 +369,15 @@ static void
ems_writeb(uint32_t addr, uint8_t val, void *priv)
{
ram_page_t *dev = (ram_page_t *) priv;
#ifdef ENABLE_NEAT_LOG
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 3)
uint32_t old = addr;
#endif
/* Write the data. */
addr = addr - dev->virt_base + dev->phys_base;
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 3)
neat_log("[W08] %08X -> %08X (%08X): val = %02X\n", old, addr, (mem_size << 10), val);
#endif
if (addr < (mem_size << 10))
*(uint8_t *) &(ram[addr]) = val;
@@ -384,13 +388,15 @@ static void
ems_writew(uint32_t addr, uint16_t val, void *priv)
{
ram_page_t *dev = (ram_page_t *) priv;
#ifdef ENABLE_NEAT_LOG
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 3)
uint32_t old = addr;
#endif
/* Write the data. */
addr = addr - dev->virt_base + dev->phys_base;
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 3)
neat_log("[W16] %08X -> %08X (%08X): val = %04X\n", old, addr, (mem_size << 10), val);
#endif
if (addr < (mem_size << 10))
*(uint16_t *) &(ram[addr]) = val;
@@ -505,7 +511,7 @@ ems_recalc(neat_t *dev, ram_page_t *ems)
neat_mem_update_state(dev, ems->virt_base, EMS_PGSIZE, MEM_FLAG_EMS, MEM_FMASK_EMS);
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT EMS: page %d set to %08lx, %sabled)\n",
ems->page, ems->addr - ram, ems->enabled ? "en" : "dis");
#endif
@@ -528,7 +534,7 @@ ems_write(uint16_t port, uint8_t val, void *priv)
int8_t new_enabled;
uint32_t new_phys_base;
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: ems_write(%04x, %02x)\n", port, val);
#endif
@@ -577,6 +583,7 @@ ems_read(uint16_t port, void *priv)
switch (port & 0x000f) {
case 0x0008: /* page number register */
case 0x0009:
ret = (dev->ems[vpage].phys_base / EMS_PGSIZE) & 0x7f;
if (dev->ems[vpage].enabled)
ret |= 0x80;
@@ -587,7 +594,7 @@ ems_read(uint16_t port, void *priv)
neat_log("Port: %04X, ret: %02X\n", port, ret);
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: ems_read(%04x) = %02x\n", port, ret);
#endif
@@ -686,7 +693,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
uint8_t *reg;
int i;
#if NEAT_DEBUG > 2
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: write(%04x, %02x)\n", port, val);
#endif
@@ -704,7 +711,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
*reg = (*reg & ~RA0_MASK) | val | (RA0_REV_ID << RA0_REV_SH);
if ((xval & 0x20) && (val & 0x20))
outb(0x64, 0xfe);
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RA0=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -712,7 +719,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
case REG_RA1:
val &= RA1_MASK;
*reg = (*reg & ~RA1_MASK) | val;
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RA1=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -720,7 +727,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
case REG_RA2:
val &= RA2_MASK;
*reg = (*reg & ~RA2_MASK) | val;
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RA2=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -728,7 +735,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
case REG_RB0:
val &= RB0_MASK;
*reg = (*reg & ~RB0_MASK) | val | (RB0_REV_ID << RB0_REV_SH);
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB0=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -737,7 +744,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
val &= RB1_MASK;
*reg = (*reg & ~RB1_MASK) | val;
shadow_recalc(dev);
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB1=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -749,7 +756,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
neat_mem_update_state(dev, 0x00080000, 0x00020000, MEM_FLAG_READ | MEM_FLAG_WRITE, MEM_FMASK_SHADOW);
else
neat_mem_update_state(dev, 0x00080000, 0x00020000, 0x00, MEM_FMASK_SHADOW);
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB2=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -758,7 +765,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
val &= RB3_MASK;
*reg = (*reg & ~RB3_MASK) | val;
shadow_recalc(dev);
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB3=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -767,7 +774,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
val &= RB4_MASK;
*reg = (*reg & ~RB4_MASK) | val;
shadow_recalc(dev);
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB4=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -776,7 +783,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
val &= RB5_MASK;
*reg = (*reg & ~RB5_MASK) | val;
shadow_recalc(dev);
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB5=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -784,7 +791,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
case REG_RB6:
val &= RB6_MASK;
*reg = (*reg & ~RB6_MASK) | val;
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB6=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -803,7 +810,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
if ((xval & RB7_EMSEN) && (val & RB7_EMSEN))
ems_set_handlers(dev);
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB7=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -811,7 +818,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
case REG_RB8:
val &= RB8_MASK;
*reg = (*reg & ~RB8_MASK) | val;
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB8=%02x(%02x)\n", val, *reg);
#endif
break;
@@ -819,7 +826,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
case REG_RB9:
val &= RB9_MASK;
*reg = (*reg & ~RB9_MASK) | val;
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB9=%02x(%02x)\n", val, *reg);
#endif
@@ -842,7 +849,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
case REG_RB10:
val &= RB10_MASK;
*reg = (*reg & ~RB10_MASK) | val;
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB10=%02x(%02x)\n", val, *reg);
#endif
@@ -877,7 +884,7 @@ neat_write(uint16_t port, uint8_t val, void *priv)
case REG_RB12:
val &= RB12_MASK;
*reg = (*reg & ~RB12_MASK) | val;
#if NEAT_DEBUG > 1
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: RB12=%02x(%02x)\n", val, *reg);
#endif
i = (val & RB12_EMSLEN) >> RB12_EMSLEN_SH;
@@ -944,7 +951,7 @@ neat_read(uint16_t port, void *priv)
break;
}
#if NEAT_DEBUG > 2
#if defined(ENABLE_NEAT_LOG) && (ENABLE_NEAT_LOG == 2)
neat_log("NEAT: read(%04x) = %02x\n", port, ret);
#endif