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Working debugger, non-working programmer and lcd test procedure with lcd mapped in memory

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This commit is contained in:
Daniele Verducci su MatissePenguin
2020-10-14 19:09:54 +02:00
parent f65d572f74
commit 63974b148c
4 changed files with 244 additions and 31 deletions
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60
z80_debugger/z80_debugger.ino
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@ -55,8 +55,9 @@ const byte MODE_ROM_EMULATOR = 1;
const byte MODE_ROM_RAM_EMULATOR = 2;
const byte ADDR_BUS[] = {50, 52, A11, A9, A8, A12, A15, A14, 53, 51, 49, 47, 45, 43, 41, 39};
const byte DATA_BUS[] = {34, 40, 42, 46, 44, 36, 30, 32};
const byte CTRL_BUS_RD = 20;
const byte DATA_BUS[] = {34, 40, 42, 44, 46, 36, 30, 32};
//const byte CTRL_BUS_RD = 20;
const byte CTRL_BUS_RD = 3;
const byte CTRL_BUS_WR = 23;
const byte CTRL_BUS_BUSACK = 25;
const byte CTRL_BUS_WAIT = 27;
@ -68,7 +69,8 @@ const byte CTRL_BUS_IORQ = A13;
const byte CTRL_BUS_MREQ = 22;
const byte CTRL_BUS_HALT = 24;
const byte CTRL_BUS_NMI = 26;
const byte CTRL_BUS_CLK= 21;
//const byte CTRL_BUS_CLK= 21;
const byte CTRL_BUS_CLK= 2;
const byte CTRL_BUS_INT = 28;
const byte PWR_GND = 37;
const byte PWR_VCC = 38;
@ -88,8 +90,8 @@ const byte PWR_VCC = 38;
*/
const byte MODE = MODE_ROM_EMULATOR;
//const byte ROM_DATA[] = {0x00, 0x00, 0x00, 0x00, 0xC3, 0x00, 0x00};
const byte ROM_DATA[] = {0x00, 0x00, 0x00, 0x00, 0x76, 0x00, 0x00};
const byte ROM_DATA[] = {0x00, 0x00, 0x00, 0x00, 0xC3, 0x00, 0x00};
//const byte ROM_DATA[] = {0x00, 0x00, 0x00, 0x00, 0x76, 0x00, 0x00};
@ -97,6 +99,18 @@ const byte ROM_DATA[] = {0x00, 0x00, 0x00, 0x00, 0x76, 0x00, 0x00};
void setup() {
Serial.begin(57600);
Serial.print("Started in mode ");
switch(MODE) {
case MODE_DEBUGGER:
Serial.println("debugger");
break;
case MODE_ROM_EMULATOR:
Serial.println("rom emulator");
break;
case MODE_ROM_RAM_EMULATOR:
Serial.println("rom/ram emulator");
break;
}
for(int pin=0; pin < 16; pin++) {
pinMode(ADDR_BUS[pin], INPUT);
}
@ -121,19 +135,6 @@ void setup() {
pinMode(PWR_VCC, INPUT);
attachInterrupt(digitalPinToInterrupt(CTRL_BUS_CLK), onClk, RISING);
unsigned int data = ROM_DATA[4];
writeByteToDataBus(data);
char output[30] = {};
sprintf(output, "%04x r- %02x Emu ROM read", 4, data);
Serial.println(output);
}
@ -208,19 +209,16 @@ void setDataBusAs(byte mode){
}
}
void writeByteToDataBus(byte toWrite) {
void writeByteToDataBus(byte j) {
setDataBusAs(OUTPUT);
unsigned i;
for (i = 1 << 7; i > 0; i = i / 2){
if (toWrite & i) {
digitalWrite(DATA_BUS[i], HIGH);
Serial.print(DATA_BUS[i]);
Serial.print("->1 ");
} else {
digitalWrite(DATA_BUS[i], LOW);
Serial.print(DATA_BUS[i]);
Serial.print("->0 ");
}
for (int n=0; n<8; n++)
{
if((0x01&j) < 0x01)
{
digitalWrite(DATA_BUS[n],LOW);
} else {
digitalWrite(DATA_BUS[n],HIGH);
}
j>>=1;
}
Serial.println(" ");
}