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Change fast_base into a variable

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This commit is contained in:
Niklas Ekström
2020-11-30 22:14:41 +01:00
parent 10f045b187
commit 01618f8014
1 changed files with 16 additions and 15 deletions
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31
emulator.c
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@@ -71,8 +71,9 @@ Copyright 2020 Claude Schwartz
reset |= (1 << (no)); \
} while (0)
#define FASTBASE 0x08000000
#define FASTSIZE (256 * 1024 * 1024)
int fast_base_configured;
unsigned int fast_base;
#define FAST_SIZE (256 * 1024 * 1024)
#define GAYLEBASE 0xD80000
#define GAYLESIZE (448 * 1024)
@@ -133,7 +134,7 @@ volatile uint32_t srdata2;
volatile uint32_t srdata2_old;
unsigned char g_kick[KICKSIZE];
unsigned char g_ram[FASTSIZE]; /* RAM */
unsigned char fast_ram_array[FAST_SIZE]; /* RAM */
unsigned char toggle;
static volatile unsigned char ovl;
static volatile unsigned char maprom;
@@ -341,8 +342,8 @@ int cpu_irq_ack(int level) {
}
unsigned int m68k_read_memory_8(unsigned int address) {
if (address >= FASTBASE && address < FASTBASE + FASTSIZE) {
return g_ram[address - FASTBASE];
if (fast_base_configured && address >= fast_base && address < fast_base + FAST_SIZE) {
return fast_ram_array[address - fast_base];
}
if (maprom == 1) {
@@ -366,8 +367,8 @@ unsigned int m68k_read_memory_8(unsigned int address) {
}
unsigned int m68k_read_memory_16(unsigned int address) {
if (address >= FASTBASE && address < FASTBASE + FASTSIZE) {
return be16toh(*(uint16_t *)&g_ram[address - FASTBASE]);
if (fast_base_configured && address >= fast_base && address < fast_base + FAST_SIZE) {
return be16toh(*(uint16_t *)&fast_ram_array[address - fast_base]);
}
if (maprom == 1) {
@@ -391,8 +392,8 @@ unsigned int m68k_read_memory_16(unsigned int address) {
}
unsigned int m68k_read_memory_32(unsigned int address) {
if (address >= FASTBASE && address < FASTBASE + FASTSIZE) {
return be32toh(*(uint32_t *)&g_ram[address - FASTBASE]);
if (fast_base_configured && address >= fast_base && address < fast_base + FAST_SIZE) {
return be32toh(*(uint32_t *)&fast_ram_array[address - fast_base]);
}
if (maprom == 1) {
@@ -418,8 +419,8 @@ unsigned int m68k_read_memory_32(unsigned int address) {
}
void m68k_write_memory_8(unsigned int address, unsigned int value) {
if (address >= FASTBASE && address < FASTBASE + FASTSIZE) {
g_ram[address - FASTBASE] = value;
if (fast_base_configured && address >= fast_base && address < fast_base + FAST_SIZE) {
fast_ram_array[address - fast_base] = value;
return;
}
@@ -445,8 +446,8 @@ void m68k_write_memory_8(unsigned int address, unsigned int value) {
}
void m68k_write_memory_16(unsigned int address, unsigned int value) {
if (address >= FASTBASE && address < FASTBASE + FASTSIZE) {
*(uint16_t *)&g_ram[address - FASTBASE] = htobe16(value);
if (fast_base_configured && address >= fast_base && address < fast_base + FAST_SIZE) {
*(uint16_t *)&fast_ram_array[address - fast_base] = htobe16(value);
return;
}
@@ -466,8 +467,8 @@ void m68k_write_memory_16(unsigned int address, unsigned int value) {
}
void m68k_write_memory_32(unsigned int address, unsigned int value) {
if (address >= FASTBASE && address < FASTBASE + FASTSIZE) {
*(uint32_t *)&g_ram[address - FASTBASE] = htobe32(value);
if (fast_base_configured && address >= fast_base && address < fast_base + FAST_SIZE) {
*(uint32_t *)&fast_ram_array[address - fast_base] = htobe32(value);
return;
}