+//
+// EEPROM handler
+//
+// by cal2
+// GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS)
+// Cleanups by James L. Hammons
+//
+
#include "eeprom.h"
#define eeprom_LOG
FILE * jerry_ee_fp;
extern char * jaguar_boot_dir;
-//////////////////////////////////////////////////////////////////////////////
-//
-//////////////////////////////////////////////////////////////////////////////
-//
-//
-//
-//
-//
-//
-//////////////////////////////////////////////////////////////////////////////
+
void eeprom_init(void)
{
- static char eeprom_filename[256];
- sprintf(eeprom_filename,"%s\\%s%.8x.eep",jaguar_boot_dir,jaguar_eeproms_path,jaguar_mainRom_crc32);
- jerry_ee_fp=fopen(eeprom_filename,"rb");
+ static char eeprom_filename[1024];
+
+ sprintf(eeprom_filename, "%s\\%s%08X.eep", jaguar_boot_dir, jaguar_eeproms_path, (unsigned int)jaguar_mainRom_crc32);
+ jerry_ee_fp = fopen(eeprom_filename, "rb");
if (jerry_ee_fp)
{
- fread(eeprom_ram,1,128,jerry_ee_fp);
+ fread(eeprom_ram, 1, 128, jerry_ee_fp);
fclose(jerry_ee_fp);
- fprintf(log_get(),"eeprom: loaded from %s\n",eeprom_filename);
- jerry_ee_fp=fopen(eeprom_filename,"wrb");
+ fprintf(log_get(), "eeprom: loaded from %s\n", eeprom_filename);
+ jerry_ee_fp = fopen(eeprom_filename, "wrb");
}
else
{
- fprintf(log_get(),"eeprom: creating %s\n",eeprom_filename);
- jerry_ee_fp=fopen(eeprom_filename,"wb");
- if (jerry_ee_fp==NULL)
- fprintf(log_get(),"eeprom: could not open/create %s\n",eeprom_filename);
+ fprintf(log_get(), "eeprom: creating %s\n", eeprom_filename);
+ jerry_ee_fp = fopen(eeprom_filename, "wb");
+ if (jerry_ee_fp == NULL)
+ fprintf(log_get(), "EEPROM: Could not open/create %s\n", eeprom_filename);
}
}
-//////////////////////////////////////////////////////////////////////////////
-//
-//////////////////////////////////////////////////////////////////////////////
-//
-//
-//
-//
-//
-//
-//////////////////////////////////////////////////////////////////////////////
+
void eeprom_reset(void)
{
- if (jerry_ee_fp==NULL)
- memset(eeprom_ram,0xff,64*2);
+ if (jerry_ee_fp == NULL)
+ memset(eeprom_ram, 0xFF, 64 * sizeof(uint16));
}
-//////////////////////////////////////////////////////////////////////////////
-//
-//////////////////////////////////////////////////////////////////////////////
-//
-//
-//
-//
-//
-//
-//////////////////////////////////////////////////////////////////////////////
+
void eeprom_done(void)
{
if (jerry_ee_fp)
{
- fwrite(eeprom_ram,1,128,jerry_ee_fp);
+ fwrite(eeprom_ram, 1, 128, jerry_ee_fp);
fclose(jerry_ee_fp);
}
else
fprintf(log_get(),"eeprom: not saved\n");
}
-//////////////////////////////////////////////////////////////////////////////
-//
-//////////////////////////////////////////////////////////////////////////////
-//
-//
-//
-//
-//
-//
-//////////////////////////////////////////////////////////////////////////////
+
void eeprom_byte_write(uint32 offset, uint8 data)
{
switch (offset)
{
- case 0xf14001: break;
- case 0xf14801: eeprom_set_di(data&0x01); break;
- case 0xf15001: eeprom_set_cs(1); break;
+ case 0xF14001:
+ break;
+ case 0xF14801:
+ eeprom_set_di(data & 0x01);
+ break;
+ case 0xF15001:
+ eeprom_set_cs(1);
+ break;
// default: fprintf(log_get(),"eeprom: unmapped 0x%.8x\n",offset); break;
}
}
-//////////////////////////////////////////////////////////////////////////////
-//
-//////////////////////////////////////////////////////////////////////////////
-//
-//
-//
-//
-//
-//
-//////////////////////////////////////////////////////////////////////////////
+
void eeprom_word_write(uint32 offset, uint16 data)
{
- eeprom_byte_write(offset+0,(data>>8)&0xff);
- eeprom_byte_write(offset+1,(data&0xff));
+ eeprom_byte_write(offset+0, (data >> 8) & 0xFF);
+ eeprom_byte_write(offset+1, data & 0xFF);
}
-//////////////////////////////////////////////////////////////////////////////
-//
-//////////////////////////////////////////////////////////////////////////////
-//
-//
-//
-//
-//
-//
-//////////////////////////////////////////////////////////////////////////////
+
uint8 eeprom_byte_read(uint32 offset)
{
switch (offset)
{
- case 0xf14001: return(eeprom_get_do()); break;
- case 0xf14801: break;
- case 0xf15001: eeprom_set_cs(1); break;
+ case 0xF14001:
+ return eeprom_get_do();
+ case 0xF14801:
+ break;
+ case 0xF15001:
+ eeprom_set_cs(1);
+ break;
// default: fprintf(log_get(),"eeprom: unmapped 0x%.8x\n",offset); break;
}
- return(0x00);
+
+ return 0x00;
}
-//////////////////////////////////////////////////////////////////////////////
-//
-//////////////////////////////////////////////////////////////////////////////
-//
-//
-//
-//
-//
-//
-//////////////////////////////////////////////////////////////////////////////
+
uint16 eeprom_word_read(uint32 offset)
{
- uint16 data=eeprom_byte_read(offset+0);
- data<<=8;
- data|=eeprom_byte_read(offset+1);
- return(data);
+ return ((uint16)eeprom_byte_read(offset+0) << 8) | eeprom_byte_read(offset+1);
}
-//////////////////////////////////////////////////////////////////////////////
-//
-//////////////////////////////////////////////////////////////////////////////
-//
-//
-//
-//
-//
-//
-//////////////////////////////////////////////////////////////////////////////
+
void eeprom_set_di(uint32 data)
{
// fprintf(log_get(),"eeprom: di=%i\n",data);
// fprintf(log_get(),"eeprom: state %i\n",jerry_ee_state);
switch (jerry_ee_state)
{
- case EE_STATE_START: {
- jerry_ee_state=EE_STATE_OP_A;
- break;
- }
- case EE_STATE_OP_A: {
- jerry_ee_op=(data<<1);
- jerry_ee_state=EE_STATE_OP_B;
- break;
- }
- case EE_STATE_OP_B: {
- jerry_ee_op|=data;
- jerry_ee_direct_jump=0;
-// fprintf(log_get(),"eeprom: opcode %i\n",jerry_ee_op);
- switch (jerry_ee_op)
- {
- case 0: jerry_ee_state=EE_STATE_0; break;
- case 1: jerry_ee_state=EE_STATE_1; break;
- case 2: jerry_ee_state=EE_STATE_2; break;
- case 3: jerry_ee_state=EE_STATE_3; break;
- }
- eeprom_set_di(data);
- break;
- }
- case EE_STATE_0: {
- jerry_ee_rstate=EE_STATE_0_0;
- jerry_ee_state=EE_READ_ADDRESS;
- jerry_ee_direct_jump=1;
- jerry_ee_address_cnt=6;
- jerry_ee_address_data=0;
- break;
- }
- case EE_STATE_0_0: {
- switch ((jerry_ee_address_data>>4)&0x03)
- {
- case 0: jerry_ee_state=EE_STATE_0_0_0; break;
- case 1: jerry_ee_state=EE_STATE_0_0_1; break;
- case 2: jerry_ee_state=EE_STATE_0_0_2; break;
- case 3: jerry_ee_state=EE_STATE_0_0_3; break;
- }
- eeprom_set_di(data);
- break;
- }
- case EE_STATE_0_0_0:{
- // writes disable
- // fprintf(log_get(),"eeprom: read only\n");
- jerry_writes_enabled=0;
- jerry_ee_state=EE_STATE_START;
- break;
- }
- case EE_STATE_0_0_1:{
- // writes all
- jerry_ee_rstate=EE_STATE_0_0_1_0;
- jerry_ee_state=EE_READ_DATA;
- jerry_ee_data_cnt=16;
- jerry_ee_data=0;
- jerry_ee_direct_jump=1;
- break;
- }
- case EE_STATE_0_0_1_0:{
- // fprintf(log_get(),"eeprom: filling eeprom with 0x%.4x\n",data);
- if (jerry_writes_enabled)
- {
- for (int i=0;i<64;i++)
- eeprom_ram[i]=jerry_ee_data;
- }
- //else
- // fprintf(log_get(),"eeprom: not writing because read only\n");
- jerry_ee_state=EE_STATE_BUSY;
- break;
- }
- case EE_STATE_0_0_2:{
- // erase all
- //fprintf(log_get(),"eeprom: erasing eeprom\n");
- if (jerry_writes_enabled)
- {
- for (int i=0;i<64;i++)
- eeprom_ram[i]=0xffff;
- }
- jerry_ee_state=EE_STATE_BUSY;
- break;
- }
- case EE_STATE_0_0_3:{
- // writes enable
- //fprintf(log_get(),"eeprom: read/write\n");
- jerry_writes_enabled=1;
- jerry_ee_state=EE_STATE_START;
- break;
- }
- case EE_STATE_1: {
- jerry_ee_rstate=EE_STATE_1_0;
- jerry_ee_state=EE_READ_ADDRESS;
- jerry_ee_address_cnt=6;
- jerry_ee_address_data=0;
- jerry_ee_direct_jump=1;
- break;
- }
- case EE_STATE_1_0: {
- jerry_ee_rstate=EE_STATE_1_1;
- jerry_ee_state=EE_READ_DATA;
- jerry_ee_data_cnt=16;
- jerry_ee_data=0;
- jerry_ee_direct_jump=1;
- break;
- }
- case EE_STATE_1_1: {
- //fprintf(log_get(),"eeprom: writing 0x%.4x at 0x%.2x\n",jerry_ee_data,jerry_ee_address_data);
- if (jerry_writes_enabled)
- eeprom_ram[jerry_ee_address_data]=jerry_ee_data;
- jerry_ee_state=EE_STATE_BUSY;
- break;
- }
- case EE_STATE_2: {
- jerry_ee_rstate=EE_STATE_2_0;
- jerry_ee_state=EE_READ_ADDRESS;
- jerry_ee_address_cnt=6;
- jerry_ee_address_data=0;
- jerry_ee_data_cnt=16;
- jerry_ee_data=0;
- break;
- }
- case EE_STATE_3: {
- jerry_ee_rstate=EE_STATE_3_0;
- jerry_ee_state=EE_READ_ADDRESS;
- jerry_ee_address_cnt=6;
- jerry_ee_address_data=0;
- jerry_ee_direct_jump=1;
- break;
- }
- case EE_STATE_3_0: {
- //fprintf(log_get(),"eeprom: erasing 0x%.2x\n",jerry_ee_address_data);
- if (jerry_writes_enabled)
- eeprom_ram[jerry_ee_address_data]=0xffff;
- jerry_ee_state=EE_STATE_BUSY;
- break;
- }
+ case EE_STATE_START:
+ jerry_ee_state = EE_STATE_OP_A;
+ break;
+ case EE_STATE_OP_A:
+ jerry_ee_op = (data << 1);
+ jerry_ee_state = EE_STATE_OP_B;
+ break;
+ case EE_STATE_OP_B:
+ jerry_ee_op |= data;
+ jerry_ee_direct_jump = 0;
+// fprintf(log_get(),"eeprom: opcode %i\n",jerry_ee_op);
+ switch (jerry_ee_op)
+ {
+ case 0: jerry_ee_state = EE_STATE_0; break;
+ case 1: jerry_ee_state = EE_STATE_1; break;
+ case 2: jerry_ee_state = EE_STATE_2; break;
+ case 3: jerry_ee_state = EE_STATE_3; break;
+ }
+ eeprom_set_di(data);
+ break;
+ case EE_STATE_0:
+ jerry_ee_rstate = EE_STATE_0_0;
+ jerry_ee_state = EE_READ_ADDRESS;
+ jerry_ee_direct_jump = 1;
+ jerry_ee_address_cnt = 6;
+ jerry_ee_address_data = 0;
+ break;
+ case EE_STATE_0_0:
+ switch ((jerry_ee_address_data >> 4) & 0x03)
+ {
+ case 0: jerry_ee_state=EE_STATE_0_0_0; break;
+ case 1: jerry_ee_state=EE_STATE_0_0_1; break;
+ case 2: jerry_ee_state=EE_STATE_0_0_2; break;
+ case 3: jerry_ee_state=EE_STATE_0_0_3; break;
+ }
+ eeprom_set_di(data);
+ break;
+ case EE_STATE_0_0_0:
+ // writes disable
+ // fprintf(log_get(),"eeprom: read only\n");
+ jerry_writes_enabled = 0;
+ jerry_ee_state = EE_STATE_START;
+ break;
+ case EE_STATE_0_0_1:
+ // writes all
+ jerry_ee_rstate = EE_STATE_0_0_1_0;
+ jerry_ee_state = EE_READ_DATA;
+ jerry_ee_data_cnt = 16;
+ jerry_ee_data = 0;
+ jerry_ee_direct_jump = 1;
+ break;
+ case EE_STATE_0_0_1_0:
+ // fprintf(log_get(),"eeprom: filling eeprom with 0x%.4x\n",data);
+ if (jerry_writes_enabled)
+ for(int i=0; i<64; i++)
+ eeprom_ram[i] = jerry_ee_data;
+ //else
+ // fprintf(log_get(),"eeprom: not writing because read only\n");
+ jerry_ee_state = EE_STATE_BUSY;
+ break;
+ case EE_STATE_0_0_2:
+ // erase all
+ //fprintf(log_get(),"eeprom: erasing eeprom\n");
+ if (jerry_writes_enabled)
+ for(int i=0; i<64; i++)
+ eeprom_ram[i] = 0xFFFF;
+
+ jerry_ee_state=EE_STATE_BUSY;
+ break;
+ case EE_STATE_0_0_3:
+ // writes enable
+ //fprintf(log_get(),"eeprom: read/write\n");
+ jerry_writes_enabled = 1;
+ jerry_ee_state = EE_STATE_START;
+ break;
+ case EE_STATE_1:
+ jerry_ee_rstate = EE_STATE_1_0;
+ jerry_ee_state = EE_READ_ADDRESS;
+ jerry_ee_address_cnt = 6;
+ jerry_ee_address_data = 0;
+ jerry_ee_direct_jump = 1;
+ break;
+ case EE_STATE_1_0:
+ jerry_ee_rstate = EE_STATE_1_1;
+ jerry_ee_state = EE_READ_DATA;
+ jerry_ee_data_cnt = 16;
+ jerry_ee_data = 0;
+ jerry_ee_direct_jump = 1;
+ break;
+ case EE_STATE_1_1:
+ //fprintf(log_get(),"eeprom: writing 0x%.4x at 0x%.2x\n",jerry_ee_data,jerry_ee_address_data);
+ if (jerry_writes_enabled)
+ eeprom_ram[jerry_ee_address_data] = jerry_ee_data;
+ jerry_ee_state = EE_STATE_BUSY;
+ break;
+ case EE_STATE_2:
+ jerry_ee_rstate = EE_STATE_2_0;
+ jerry_ee_state = EE_READ_ADDRESS;
+ jerry_ee_address_cnt = 6;
+ jerry_ee_address_data = 0;
+ jerry_ee_data_cnt = 16;
+ jerry_ee_data = 0;
+ break;
+ case EE_STATE_3:
+ jerry_ee_rstate = EE_STATE_3_0;
+ jerry_ee_state = EE_READ_ADDRESS;
+ jerry_ee_address_cnt = 6;
+ jerry_ee_address_data = 0;
+ jerry_ee_direct_jump = 1;
+ break;
+ case EE_STATE_3_0:
+ //fprintf(log_get(),"eeprom: erasing 0x%.2x\n",jerry_ee_address_data);
+ if (jerry_writes_enabled)
+ eeprom_ram[jerry_ee_address_data] = 0xFFFF;
+ jerry_ee_state = EE_STATE_BUSY;
+ break;
case EE_READ_DATA:
- {
- //fprintf(log_get(),"eeprom:\t\t\t%i bit %i\n",data,jerry_ee_data_cnt-1);
- jerry_ee_data<<=1;
- jerry_ee_data|=data;
- jerry_ee_data_cnt--;
- if (!jerry_ee_data_cnt)
- {
- jerry_ee_state=jerry_ee_rstate;
- if (jerry_ee_direct_jump)
- eeprom_set_di(data);
- }
- break;
- }
+ //fprintf(log_get(),"eeprom:\t\t\t%i bit %i\n",data,jerry_ee_data_cnt-1);
+ jerry_ee_data <<= 1;
+ jerry_ee_data |= data;
+ jerry_ee_data_cnt--;
+ if (!jerry_ee_data_cnt)
+ {
+ jerry_ee_state = jerry_ee_rstate;
+ if (jerry_ee_direct_jump)
+ eeprom_set_di(data);
+ }
+ break;
case EE_READ_ADDRESS:
- {
- jerry_ee_address_data<<=1;
- jerry_ee_address_data|=data;
- jerry_ee_address_cnt--;
-// fprintf(log_get(),"eeprom:\t%i bits remaining\n",jerry_ee_address_cnt);
- if (!jerry_ee_address_cnt)
- {
- jerry_ee_state=jerry_ee_rstate;
- //fprintf(log_get(),"eeprom:\t\tread address 0x%.2x\n",jerry_ee_address_data);
- if (jerry_ee_direct_jump)
- eeprom_set_di(data);
- }
- break;
- }
- default: {
- jerry_ee_state=EE_STATE_OP_A;
- break;
- }
-
+ jerry_ee_address_data <<= 1;
+ jerry_ee_address_data |= data;
+ jerry_ee_address_cnt--;
+// fprintf(log_get(),"eeprom:\t%i bits remaining\n",jerry_ee_address_cnt);
+ if (!jerry_ee_address_cnt)
+ {
+ jerry_ee_state = jerry_ee_rstate;
+ //fprintf(log_get(),"eeprom:\t\tread address 0x%.2x\n",jerry_ee_address_data);
+ if (jerry_ee_direct_jump)
+ eeprom_set_di(data);
+ }
+ break;
+ default:
+ jerry_ee_state = EE_STATE_OP_A;
}
}
-//////////////////////////////////////////////////////////////////////////////
-//
-//////////////////////////////////////////////////////////////////////////////
-//
-//
-//
-//
-//
-//
-//////////////////////////////////////////////////////////////////////////////
+
void eeprom_set_cs(uint32 state)
{
// fprintf(log_get(),"eeprom: cs=%i\n",state);
- jerry_ee_state=EE_STATE_START;
- jerry_ee_op=0;
- jerry_ee_rstate=0;
- jerry_ee_address_data=0;
- jerry_ee_address_cnt=6;
- jerry_ee_data=0;
- jerry_ee_data_cnt=16;
- jerry_writes_enabled=1;
+ jerry_ee_state = EE_STATE_START;
+ jerry_ee_op = 0;
+ jerry_ee_rstate = 0;
+ jerry_ee_address_data = 0;
+ jerry_ee_address_cnt = 6;
+ jerry_ee_data = 0;
+ jerry_ee_data_cnt = 16;
+ jerry_writes_enabled = 1;
}
-//////////////////////////////////////////////////////////////////////////////
-//
-//////////////////////////////////////////////////////////////////////////////
-//
-//
-//
-//
-//
-//
-//////////////////////////////////////////////////////////////////////////////
+
uint32 eeprom_get_do(void)
{
- uint16 data=1;
+ uint16 data = 1;
+
switch (jerry_ee_state)
{
- case EE_STATE_START: {
- data=1;
- break;
- }
- case EE_STATE_BUSY: {
- jerry_ee_state=EE_STATE_START;
- data=0;
- break;
- }
- case EE_STATE_2_0: {
- jerry_ee_data_cnt--;
- data=((eeprom_ram[jerry_ee_address_data]&(1<<jerry_ee_data_cnt))>>jerry_ee_data_cnt);
- if (!jerry_ee_data_cnt)
- {
- //fprintf(log_get(),"eeprom: read 0x%.4x at 0x%.2x cpu %i pc=0x%.8x\n",eeprom_ram[jerry_ee_address_data],jerry_ee_address_data,jaguar_cpu_in_exec,s68000readPC());
- jerry_ee_state=EE_STATE_START;
- }
- break;
- }
+ case EE_STATE_START:
+ data = 1;
+ break;
+ case EE_STATE_BUSY:
+ jerry_ee_state = EE_STATE_START;
+ data = 0;
+ break;
+ case EE_STATE_2_0:
+ jerry_ee_data_cnt--;
+ data = (eeprom_ram[jerry_ee_address_data] & (1 << jerry_ee_data_cnt)) >> jerry_ee_data_cnt;
+ if (!jerry_ee_data_cnt)
+ {
+ //fprintf(log_get(),"eeprom: read 0x%.4x at 0x%.2x cpu %i pc=0x%.8x\n",eeprom_ram[jerry_ee_address_data],jerry_ee_address_data,jaguar_cpu_in_exec,s68000readPC());
+ jerry_ee_state = EE_STATE_START;
+ }
+ break;
}
+
// fprintf(log_get(),"eeprom: do=%i\n",data);
- return(data);
+ return data;
}
projects / virtualjaguar / blobdiff