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#include <conio.h>
#include <stdlib.h>
#include <stdio.h>
#include <unistd.h>

unsigned char * pokey = (unsigned char *) 0xd200;
unsigned char * config = (unsigned char *) 0xd210;

unsigned char has_flash()
{
return ((config[1]&0x40) == 0x40);
}
unsigned long readFlash(unsigned long addr, unsigned char cfgarea)
{
unsigned long res;
unsigned char al;

addr = addr<<2;

al = addr&0xff;
config[13] = al|3;
config[14] = (addr>>8)&0xff;

config[11] = (((addr>>16)&0x7)<<3)|cfgarea<<2|2|1;

res = config[15];
config[13] = al|2;
res = res<<8;
res |= config[15];
config[13] = al|1;
res = res<<8;
res |= config[15];
config[13] = al|0;
res = res<<8;
res |= config[15];

return res;
}

void writeFlash(unsigned long addr, unsigned char cfgarea, unsigned long data)
{
unsigned char al;

addr = addr<<2;

al = addr&0xff;
config[13] = al|0;
config[14] = (addr>>8)&0xff;

config[15] = data&0xff;
config[13] = al|1;
data = data>>8;
config[15] = data&0xff;
config[13] = al|2;
data = data>>8;
config[15] = data&0xff;
config[13] = al|3;
data = data>>8;
config[15] = data;

config[11] = (((addr>>16)&0x7)<<3)|cfgarea<<2|2|0;
}

//void displayFlash(
//{
// cprintf("%lx ",readFlash(config, 0x0, 0));
// cprintf("%lx ",readFlash(config, 0x1, 0));
// cprintf("%lx ",eadFlash(config, 0x2, 0));
// cprintf("%lx ",readFlash(config, 0x3, 0));
// cprintf("\r\n");
// cprintf("%lx ",readFlash(config, 0x2000, 0));
// cprintf("%lx ",readFlash(config, 0x2001, 0));
// cprintf("%lx ",readFlash(config, 0x2002, 0));
// cprintf("%lx ",readFlash(config, 0x2003, 0));
// cprintf("\r\n");
// cprintf("%lx ",readFlash(config, 0x0, 1));
// cprintf("%lx ",readFlash(config, 0x1, 1));
// cprintf("\r\n");
// cprintf("%lx ",readFlash(config, 0x4000, 0));
// cprintf("%lx ",readFlash(config, 0x4001, 0));
// cprintf("%lx ",readFlash(config, 0x4002, 0));
// cprintf("%lx ",readFlash(config, 0x4003, 0));
// cprintf("\r\n");
// cprintf("%lx ",readFlash(config, 0x6000, 0));
// cprintf("%lx ",readFlash(config, 0x6001, 0));
// cprintf("%lx ",readFlash(config, 0x6002, 0));
// cprintf("%lx ",readFlash(config, 0x6003, 0));
// cprintf("\r\n");
//}

void writeFlashContentsToFile()
{
FILE * output;
unsigned long addr;
unsigned long * buffer = (unsigned long *)malloc(1024);

output = fopen("d3:flash.bin","w");
for (addr=0;addr!=0xe600;addr+=256)
{
unsigned short i;
for (i=0;i!=256;++i)
buffer[i] = readFlash(addr+i,0);
fwrite(&buffer[0],1024,1,output);
}

fclose(output);

free(buffer);
}

void writeProtect(unsigned char onoff)
{
unsigned long data = readFlash(1, 1);
unsigned long mask = 0x1f;
unsigned long sectormask = 0x00700000;
unsigned long pagemask = 0x000fffff;
data = data|sectormask|pagemask; //Spurious erase fix!
mask = mask << 23;
if (onoff)
data = data|mask;
else
data = data&~mask;
writeFlash(1,1,data);
}

void flashContentsFromFile()
{
FILE * input;
unsigned int addr;
unsigned long * buffer = (unsigned long *)malloc(1024);

writeProtect(0);

input = fopen("d3:flash.bin","r");
for (addr=0;addr!=0xe600;addr+=256)
{
unsigned short i;
fread(&buffer[0],1024,1,input);
for (i=0;i!=256;++i)
writeFlash(addr+i,0,buffer[i]);
}

fclose(input);

writeProtect(1);

free(buffer);
}

int getPageSize()
{
config[4] = 5; //e.g 114M08QC
// 01234567
return config[4]=='6' ? 1024 : 512; // 16Kb for up to 10M08, then 32Kb for 10M16
}

void erasePageContainingAddress(unsigned long addr)
{
unsigned long data;
unsigned long sectormask = 0x00700000;
unsigned long pagemask = 0x000fffff;
unsigned long status;

data = readFlash(1,1);
data = data|sectormask;
data = data&~pagemask;
data = data|addr;
writeFlash(1,1,data);

for(;;)
{
status = readFlash(0,1);
if ((status&0x3)==0) break;
}
}

void eraseSector(unsigned char sector)
{
unsigned long data;
unsigned long sectormask = 0x00700000;
unsigned long pagemask = 0x000fffff;
unsigned long status;

data = readFlash(1,1);
data = data|pagemask;
data = data&~sectormask;
data = data|(((unsigned long)sector)<<20);
writeFlash(1,1,data);

for(;;)
{
status = readFlash(0,1);
if ((status&0x3)==0) break;
}
}

void renderLine(unsigned long * flash1, unsigned long * flash2, unsigned char activeLine, unsigned char line, unsigned char col)
{
unsigned char val;
unsigned char i;

gotoxy(0,line+3);
val = (*flash1)&0xff;

switch(line)
{
case 1:
revers(activeLine==1);
cprintf("Mixing : %s",((val&1)==1) ? "Non-linear" : "Linear");
break;
case 2:
revers(activeLine==2);
cprintf("Channel mode : %s",((val&4)==4) ? "On" : "Off");
break;
case 3:
revers(activeLine==3);
cprintf("IRQ : %s",((val&8)==8) ? "All pokey chips" : "Pokey 1");
break;
case 4:
revers(activeLine==4);
cprintf("Mono support : %s",((val&16)==16) ? "Play on both channels" : "Left only");
break;
case 5:
revers(activeLine==5);
cprintf("Post divide : ");
val = ((*flash1)>>8)&0xff;
for (i=0;i!=4;++i)
{
unsigned char pd = (val&0x3);
switch (pd)
{
case 0:
pd = 1;
break;
case 1:
pd = 2;
break;
case 2:
pd = 4;
break;
case 3:
pd = 8;
break;
}
revers(activeLine==5 && col==i);
cprintf("%d=%d ",i+1,pd);
val = val>>2;
}
break;
case 6:
revers(activeLine==6);
cprintf("GTIA mixing : ");
val = ((*flash1)>>16)&0xff;
for (i=0;i!=4;++i)
{
unsigned char pd = (val&0x1);
revers(activeLine==6 && col==i);
cprintf("%d=%d ",i+1,pd);
val = val>>1;
}
break;
case 7:
val = ((*flash1)>>24)&0xff;
revers(activeLine==7);
cprintf("PSG frequency : ");
switch (val&3)
{
case 0:
cprintf("2MHz");
break;
case 1:
cprintf("1MHz");
break;
case 2:
cprintf("PHI2");
break;
}
break;
case 8:
val = ((*flash1)>>24)&0xff;
revers(activeLine==8);
cprintf("PSG stereo : ");
switch ((val&12)>>2)
{
case 0:
cprintf("mono (L:ABC R:ABC)");
break;
case 1:
cprintf("polish (L:AB R:BC )");
break;
case 2:
cprintf("czech (L:AC R:BC )");
break;
case 3:
cprintf("l/r (L:111 R:222)");
break;
}
break;
case 9:
val = ((*flash1)>>24)&0xff;
revers(activeLine==9);
cprintf("PSG envelope : ");
if ((val&16)==16)
cprintf("16 steps");
else
cprintf("32 steps");
break;
case 10:
val = ((*flash1)>>24)&0xff;
revers(activeLine==10);
cprintf("PSG volume : ");
if (((val&0x60)>>5)==3)
cprintf("Linear");
else
cprintf("Log %d",(val>>5)&3);
break;
case 11:
revers(activeLine==11);
val = (*flash2)&0x3;
cprintf("SID version : ");
revers(activeLine==11 && col==0);
switch(val)
{
case 0:
cprintf("1:8580 ");
break;
case 1:
cprintf("1:6581 ");
break;
case 2:
cprintf("1:8580Digi ");
break;
}
revers(activeLine==11 && col==1);
val = (*flash2)&0x30;
switch(val)
{
case 0:
cprintf("2:8580 ");
break;
case 0x10:
cprintf("2:6581 ");
break;
case 0x20:
cprintf("2:8580Digi ");
break;
}
break;
case 12:
revers(activeLine==12);
val = ((*flash2)>>8)&0x1f;
cprintf("Restrict : ");
revers(activeLine==12 && col==0);
if (val&2)
cprintf("quad ");
else if (val&1)
cprintf("dual ");
else
cprintf("mono ");
revers(activeLine==12 && col==1);
if (val&4)
cprintf(" sid ");
else
cprintf("!sid ");
revers(activeLine==12 && col==2);
if (val&8)
cprintf(" psg ");
else
cprintf("!psg ");
revers(activeLine==12 && col==3);
if (val&16)
cprintf(" covox");
else
cprintf("!covox");
break;
case 13:
revers(activeLine==13);
cprintf("PHI2->1MHz : %s",((val&32)==32) ? "PAL (5/9)" : "NTSC (4/7)");
break;
}
revers(0);
*flash2; // silence warning
}


void render(unsigned long * flash1, unsigned long * flash2, unsigned char activeLine, unsigned char line, unsigned char col)
{
unsigned char pokeys;
unsigned char val;
unsigned char i;
unsigned char prev559;
if (line ==255)
{
prev559 = *(unsigned char *)559;
*(unsigned char *)559 = 0;
clrscr();
//textcolor(0xa);
chline(40);
cprintf("Pokeymax config v1.1 ");
cprintf(" Core:");
for (i=0;i!=8;++i)
{
config[4] = i;
cprintf("%c",config[4]);
}
gotoxy(0,3);
chline(40);

gotoxy(0,17);
chline(40);
cprintf("Options:\r\n");
cprintf(" (A)pply config\r\n");
if (has_flash())
{
cprintf(" (S)tore config\r\n");
cprintf(" (U)pdate core/ (V)erify core\r\n");
}
cprintf(" (Q)uit\r\n");
cprintf("Use arrows and enter to change config");
}
gotoxy(0,2);

val = ((*flash2)>>8)&0x1f;
config[7] = val;
val = config[1];
pokeys = val&0x3;
switch (pokeys)
{
case 0:
pokeys = 1;
break;
case 1:
pokeys = 2;
break;
case 2:
pokeys = 4;
break;
case 3:
pokeys = 8;
break;
}
cprintf("Pokey:%d sid:%d psg:%d covox:%d sample:%d",pokeys,(val&4)==4 ? 2 : 0,(val&8)==8 ? 2 : 0,(val&16)==16 ? 1 : 0,(val&32)==32 ? 1 : 0);

if (line==255)
{
for (line=1;line<=13;++line)
renderLine(flash1,flash2,activeLine, line,col);
*(unsigned char *)559 = prev559;
}
else
{
renderLine(flash1,flash2,activeLine, line,col);
if (wherex()>15)
cclear(40-wherex());
}
}

void changeValue(unsigned long * flash1, unsigned long * flash2, unsigned char line, unsigned char col)
{
unsigned char shift;
unsigned char mask=1;
unsigned char max=1;

unsigned char val;
unsigned long tmp;

unsigned long * flashaddr = flash1;

switch(line)
{
case 1:
shift = 0;
break;
case 2:
shift = 2;
break;
case 3:
shift = 3;
break;
case 4:
shift = 4;
break;
case 5:
shift = 8 + (col<<1);
mask = 3;
max = 3;
break;
case 6:
shift = 16 + col;
break;
case 7:
mask = 3;
shift = 24;
max = 2;
break;
case 8:
mask = 3;
shift = 26;
max = 3;
break;
case 9:
shift = 28;
break;
case 10:
mask = 3;
shift = 29;
max = 3;
break;
case 11:
flashaddr = flash2;
mask = 3;
shift = 0 + (col<<2);
max = 2;
break;
case 12:
flashaddr = flash2;
if (col==0)
{
mask = 3;
shift = 8;
max = 2;
}
else
{
mask = 1;
shift = 9 + col;
max = 1;
}
break;
case 13:
shift = 5;
break;
}

tmp = mask;
tmp = tmp<<shift;
val = ((*flashaddr)&tmp)>>shift;
*flashaddr = (*flashaddr)&~tmp;
val = val+1;
if (val>max) val=0;
tmp = val;
tmp = tmp<<shift;
*flashaddr |= tmp;
}

void applyConfig(unsigned long flash1, unsigned long flash2)
{
clrscr();
bgcolor(0x46);
//textcolor(0xa);
chline(40);
cprintf("Applying config\r\n");
chline(40);

cprintf("Press Y to confirm\r\n");
while(!kbhit());
if (cgetc()=='y')
{
config[0] = flash1&0xff;
config[2] = (flash1>>8)&0xff;
config[3] = (flash1>>16)&0xff;
config[5] = (flash1>>24)&0xff;

config[6] = flash2&0xff;
config[7] = (flash2>>8)&0xff;
// SATURATE_NEXT <= flash_do(0);
// -- 1 reserved...
// CHANNEL_MODE_NEXT <= flash_do(2);
// IRQ_EN_NEXT <= flash_do(3);
// DETECT_RIGHT_NEXT <= flash_do(4);
// -- 5-7 reserved
// POST_DIVIDE_NEXT <= flash_do(15 downto 8);
// GTIA_ENABLE_NEXT <= flash_do(19 downto 16);
// -- 23 downto 20 reserved
// PSG_FREQ_NEXT <= flash_do(25 downto 24);
// PSG_STEREOMODE_NEXT <= flash_do(27 downto 26);
// PSG_ENVELOPE16_NEXT <= flash_do(28);
// -- 31 downto 29 reserved
}

bgcolor(0x00);
}

void saveConfig(unsigned long flash1, unsigned long flash2)
{
clrscr();
bgcolor(0x46);
//textcolor(0xa);
chline(40);
cprintf("Saving config\r\n");
chline(40);

cprintf("Press Y to confirm\r\n");
while(!kbhit());
if (cgetc()=='y')
{
unsigned int pagesize = getPageSize();
unsigned long * buffer = (unsigned long *)malloc(pagesize*4);
unsigned short i = 0;

cprintf("Backing up page\r\n");
for (i=2;i!=pagesize;++i)
{
buffer[i] = readFlash(i,0);
}
writeProtect(0);
cprintf("Erasing page\r\n");
erasePageContainingAddress(0);
cprintf("Writing new page\r\n");
buffer[0] = flash1;
buffer[1] = flash2;
for (i=0;i!=pagesize;++i)
{
writeFlash(i,0,buffer[i]);
}
writeProtect(1);

free(buffer);
}

bgcolor(0x00);
}

void updateCore()
{
unsigned long flash1 = readFlash(0,0);
unsigned long flash2 = readFlash(1,0); //unused for now
char filename[] = "d4:core.bin";

clrscr();
bgcolor(0x34);
//textcolor(0xa);
chline(40);
cprintf("Updating core\r\n");
chline(40);

cprintf("Please insert core.bin into D4\r\n");
cprintf("Press Y to confirm core update\r\n");
while(!kbhit());
if (cgetc()=='y')
{
FILE * input = fopen(filename,"r");
if (!input)
{
cprintf("Failed to open file!\r\n");
sleep(3);
}
else
{
unsigned char version[8];
unsigned char valid;
unsigned char i,j;

cprintf("\r\n");
chline(40);
cprintf("DO NOT TURN OFF THE COMPUTER\r\n");
chline(40);
cprintf("\r\n");

cprintf("File opened\r\n");
fread(&version[0],8,1,input);
// Verify validity!
valid = 1;
for (i=3;i!=8;++i)
{
config[4] = i;
if (config[4]!=version[i])
{
valid = 0;

cprintf("Invalid core\r\n");
cprintf("Current:");
for (j=0;j!=8;++j)
{
config[4] = j;
cprintf("%c",config[4]);
}
cprintf("\r\nFile :");
for (j=0;j!=8;++j)
cprintf("%c",version[j]);

config[4] = 5;
if (config[4] == version[5])
{
cprintf("\r\nPress any key to quit or f to force\r\n");
if (cgetc()=='f')
{
cprintf("FORCED!\r\n");
cprintf("You may need to change wiring!\r\n");
valid = 1;
}
}
else
{
cprintf("\r\nCore is for a different FPGA!\r\n");
cprintf("Press any key to quit\r\n");
cgetc();
}

break;
}
}
if (valid)
{
//fseek(input,0,SEEK_SET);
fclose(input);
input = fopen(filename,"r");
writeProtect(0);

cprintf("Erasing");
eraseSector(1);
cputc('.');
eraseSector(2);
cputc('.');
eraseSector(3);
cputc('.');
eraseSector(4);
cprintf(" Done\r\n");

config[4] = 5; //e.g 114M08QC
// 01234567
j = config[4];
config[4] = 4;
cprintf("Flashing M%c%c... please wait",config[4],j);
{
unsigned long addr;
unsigned long maxaddr;
unsigned long * buffer = (unsigned long *)malloc(1024);
unsigned char t=0;

config[4] = 5;
maxaddr = config[4]=='4' ? 0xd600 : config[4]=='8' ? 0xe600 : 0x19800; // d600 for m04, e600 for m08. Default to 08 so DEVELPR works

for (addr=0;addr!=maxaddr;addr+=256)
{
unsigned long i;
gotoxy(0,20);
cprintf("%c %d/%d ",(t ? '/' : '\\'),(unsigned short)(1+(addr>>8)),(unsigned short)(maxaddr>>8));
t = !t;

i = fread(&buffer[0],1024,1,input);
if (i!=1)
{
cprintf("\r\nError reading disk!\r\n");
cprintf("Press key then START AGAIN!\r\n");
fclose(input);
while(!kbhit());
return;
}
if (addr==0)
{
// keep our config...
buffer[0] = flash1;
buffer[1] = flash2;
}
for (i=0;i!=256;++i)
{
if (buffer[i]!=0xffffffff)
{
bordercolor(i);
writeFlash(addr+i,0,buffer[i]);
}
}
}

writeProtect(1);

free(buffer);
}
}
}
fclose(input);
}
bgcolor(0x00);
bordercolor(0x00);

//writeFlashContentsToFile();
}

void verifyCore()
{
unsigned long flash1 = readFlash(0,0);
unsigned long flash2 = readFlash(1,0); //unused for now
char filename[] = "d4:core.bin";

clrscr();
bgcolor(0x34);
//textcolor(0xa);
chline(40);
cprintf("Verifying core\r\n");
chline(40);

cprintf("Please insert core.bin into D4\r\n");
cprintf("Press Y to confirm core verify\r\n");
while(!kbhit());
if (cgetc()=='y')
{
FILE * input = fopen(filename,"r");
int j;
unsigned long addr;
unsigned long maxaddr;
unsigned long * buffer = (unsigned long *)malloc(1024);
unsigned char t=0;
if (!input)
{
cprintf("Failed to open file!\r\n");
sleep(3);
}
//fseek(input,0,SEEK_SET);
fclose(input);
input = fopen(filename,"r");

config[4] = 5; //e.g 114M08QC
// 01234567
j = config[4];
config[4] = 4;
cprintf("Verifying M%c%c... please wait",config[4],j);

config[4] = 5;
maxaddr = config[4]=='4' ? 0xd600 : config[4]=='8' ? 0xe600 : 0x19800; // d600 for m04, e600 for m08. Default to 08 so DEVELPR works

for (addr=0;addr!=maxaddr;addr+=256)
{
unsigned long i;
gotoxy(0,20);
cprintf("%c %d/%d ",(t ? '/' : '\\'),(unsigned short)(1+(addr>>8)),(unsigned short)(maxaddr>>8));
t = !t;

i = fread(&buffer[0],1024,1,input);
if (i!=1)
{
cprintf("\r\nError reading disk!\r\n");
cprintf("Press key then START AGAIN!\r\n");
fclose(input);
while(!kbhit());
bgcolor(0x00);
bordercolor(0x00);
return;
}
if (addr==0)
{
// keep our config...
buffer[0] = flash1;
buffer[1] = flash2;
}
for (i=0;i!=256;++i)
{
unsigned long val;
bordercolor(i);
val = readFlash(addr+i,0);
if (val!=buffer[i])
{
cprintf("\r\nError at address %08lx\r\n",addr+i);
cprintf("disk:%08lx flash:%08lx\r\n",buffer[i],val);
cprintf("Press key to continue\r\n");
fclose(input);
while(!kbhit());
return;
}
}
}

free(buffer);
fclose(input);
}
bgcolor(0x00);
bordercolor(0x00);

//writeFlashContentsToFile();
}

int main (void)
{
unsigned int i;
unsigned char prevline,line,col,quit;
unsigned long flash1;
unsigned long flash2;
unsigned char origbg;
unsigned char origbord;
if (pokey[12] != 1)
{
cprintf("Pokeymax not found!");
sleep(5);
return -1;
}
origbg = bgcolor(0);
origbord = bordercolor(0);

pokey[12] = 0x3f; // select config area

// We have just 8 bytes of data for config
flash1 = 0; //readFlash(0,0);
flash2 = 0; //readFlash(1,0); //unused for now

flash1 =
(((unsigned long)config[5])<<24) |
(((unsigned long)config[3])<<16) |
(((unsigned long)config[2])<<8) |
(((unsigned long)config[0]));
flash2 =
(((unsigned long) config[7])<<8) |
((unsigned long) config[6]);

prevline = 255;
line = 1;
col = 0;
quit = 0;

while (!quit)
{
render(&flash1,&flash2,line,prevline,col);
render(&flash1,&flash2,line,line,col);

prevline=line;

while (!kbhit());
switch (cgetc())
{
case '-':
if (line>1)
line = line-1;
col = 0;
break;
case '=':
if (line<13)
line = line+1;
col = 0;
break;
case '+':
if (col>0)
col =col-1;
break;
case '*':
col =col+1;
if (line==11)
{
if (col>1)
col =1;
}
else
{
if (col>3)
col =3;
}
break;
case CH_ENTER:
changeValue(&flash1,&flash2,line,col);
break;
case 'a':
// Apply config
applyConfig(flash1,flash2);
prevline = 255;
break;
case 's':
// Save config
if (has_flash()) saveConfig(flash1,flash2);
prevline = 255;
break;
case 'u':
// Update core
if (has_flash()) updateCore();
prevline = 255;
break;
case 'v':
// Verify core
if (has_flash()) verifyCore();
prevline = 255;
break;
case 'q':
clrscr();
quit = 1;
break;
case 'x':
clrscr();
cprintf("Hex dump of flash from 0x400\r\n");
for (i=0;i!=64;++i)
{
unsigned long val = readFlash(i+0x400, 0);
cprintf("%08lx",val);
}
while (!kbhit());
prevline = 255;

break;
}
}

/* displayFlash(config);
//writeFlashContentsToFile(config);
//erasePageContainingAddress(config,0x0);
eraseSector(config,1);
eraseSector(config,2);
eraseSector(config,3);
eraseSector(config,4);
displayFlash(config);
flashContentsFromFile(config);
displayFlash(config);*/

pokey[12] = 0x0; // deselect config area
bgcolor(origbg);
bordercolor(origbord);
return EXIT_SUCCESS;
}


(55-55/87)