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sorting c64 folder / adding 4464 tester

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This commit is contained in:
David Bandeira
2025-05-17 11:10:39 +02:00
parent 2d149478ba
commit 36ae6cb908
22 changed files with 13739 additions and 6 deletions
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244
dram.tester/C64/arduino_dram4164_tester-main/dramtester/dramtester.ino Normal file
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/*
4164 DRAM Tester
*/
#define RAS 4
#define CAS 5
#define D 6 // chip data IN
#define Q 8 // chip data OUT
#define WRITE 9
#define RED_STATUS_LED 7 // use 220ohm resistor
#define GREEN_STATUS_LED 12 // use 220ohm resistor
#define RANDOM_1 0
#define RANDOM_2 1
#define ALL_HIGH 2
#define ALL_LOW 3
#define ALTERNATING_1 4
#define ALTERNATING_2 5
#define NUM_PATTERNS 6
int patterns[2][256] = {
{1,0,1,0,0,1,1,0,1,0,0,1,1,0,0,1,0,1,0,0,1,1,1,0,1,0,0,0,0,1,1,0,0,1,1,1,0,1,0,1,1,0,1,0,1,1,1,0,1,0,0,1,0,1,1,1,1,1,1,1,0,0,0,0,1,0,1,0,1,0,0,1,0,1,0,1,0,0,1,0,0,1,0,0,1,1,1,0,1,1,0,1,1,0,0,0,1,1,0,0,1,1,1,0,1,0,0,0,1,1,1,1,1,0,1,1,1,0,1,0,1,1,1,0,0,0,1,1,0,0,1,1,1,1,0,0,0,0,1,0,0,1,1,1,1,0,1,1,1,1,1,1,1,1,0,0,1,1,0,0,1,0,1,1,1,1,1,1,0,1,0,1,1,0,1,0,0,0,0,1,1,0,0,1,1,1,0,1,0,0,0,0,0,0,1,0,0,0,0,1,0,0,0,0,0,0,0,0,1,1,0,1,1,1,0,1,1,0,1,1,0,1,1,1,1,1,1,1,0,0,0,1,0,0,0,1,1,0,1,0,0,1,0,1,1,1,0,0,1,0,1,0,1,1,0,0},
{0,0,0,0,0,1,1,1,1,1,1,1,0,1,0,0,0,1,0,1,1,0,0,0,0,1,1,0,0,0,0,1,0,1,1,1,0,0,0,0,0,1,1,0,1,1,0,0,0,0,1,1,0,0,1,1,0,1,1,0,0,1,1,0,1,1,0,1,1,1,0,0,1,0,0,0,1,1,0,0,1,1,1,1,0,1,1,0,0,0,1,1,1,1,1,0,0,1,0,1,0,1,1,0,1,0,1,1,1,1,0,1,0,0,1,0,0,1,1,0,0,1,0,1,0,0,1,1,0,0,0,0,1,0,0,1,0,1,1,0,1,1,0,0,0,1,1,1,0,1,1,0,0,1,1,1,1,1,1,1,1,0,1,1,1,0,0,0,1,1,0,0,0,0,0,1,0,1,0,1,0,0,1,0,1,1,0,0,1,1,0,1,0,0,0,1,1,1,1,1,0,0,1,0,1,1,1,1,1,1,0,0,0,1,1,0,1,0,1,1,1,0,0,1,1,1,1,0,0,1,0,0,0,0,0,0,0,1,0,1,1,0,1,0,1,0,0,0,1,1,1,0,0,0,0,1},
};
// the setup function runs once when you press reset or power the board
void setup() {
Serial.begin(9600);
pinMode(A0, OUTPUT);
pinMode(A1, OUTPUT);
pinMode(A2, OUTPUT);
pinMode(A3, OUTPUT);
pinMode(A4, OUTPUT);
pinMode(A5, OUTPUT);
pinMode(10, OUTPUT);
pinMode(11, OUTPUT);
pinMode(D, OUTPUT);
pinMode(Q, INPUT);
pinMode(RAS, OUTPUT);
pinMode(CAS, OUTPUT);
pinMode(WRITE, OUTPUT);
pinMode(RED_STATUS_LED, OUTPUT);
pinMode(GREEN_STATUS_LED, OUTPUT);
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(RED_STATUS_LED, LOW);
digitalWrite(GREEN_STATUS_LED, LOW);
Serial.println("Starting test...");
for (int t = 0; t < 3; t++) {
digitalWrite(GREEN_STATUS_LED, HIGH);
delay(200);
digitalWrite(GREEN_STATUS_LED, LOW);
delay(200);
}
// Do a write/read but ignore return.
writeBits(ALL_LOW, 0);
readBits(ALL_LOW, 0);
for(int pattern = 0 ; pattern < NUM_PATTERNS; pattern++) {
for(int row=0; row<=255; row++) {
Serial.println("Testing pattern " + String(pattern) + " row: " + String(row));
writeBits(pattern, row);
int col = readBits(pattern, row);
if (col>=0) {
digitalWrite(RED_STATUS_LED, HIGH);
Serial.println("ERROR: row " + String(row) + " col " + String(col) + " did not match pattern.");
while(1);
}
digitalWrite(RED_STATUS_LED, row % 2 ? HIGH : LOW);
digitalWrite(GREEN_STATUS_LED, row % 2 ? LOW : HIGH);
}
digitalWrite(RED_STATUS_LED, LOW);
digitalWrite(GREEN_STATUS_LED, LOW);
delay(1000);
// Flash green with pattern num for success
for (int t = 0; t < pattern+1; t++) {
digitalWrite(GREEN_STATUS_LED, HIGH);
delay(200);
digitalWrite(GREEN_STATUS_LED, LOW);
delay(200);
}
delay(1000);
}
Serial.println("Test DONE. All OK!");
while(1) {
digitalWrite(GREEN_STATUS_LED, HIGH);
delay(500);
digitalWrite(GREEN_STATUS_LED, LOW);
delay(500);
}
}
void writeBits(int pattern, int row) {
// Pull RAS and CAS HIGH
digitalWrite(RAS, HIGH);
digitalWrite(CAS, HIGH);
// Loop though all the columns
for (int col=0; col<=255; col++) {
// Set row address
digitalWrite(A0, bitRead(row, 0));
digitalWrite(A1, bitRead(row, 1));
digitalWrite(A2, bitRead(row, 2));
digitalWrite(A3, bitRead(row, 3));
digitalWrite(A4, bitRead(row, 4));
digitalWrite(A5, bitRead(row, 5));
digitalWrite(10, bitRead(row, 6));
digitalWrite(11, bitRead(row, 7));
// Pull RAS LOW
digitalWrite(RAS, LOW);
// Pull Write LOW (Enables write)
digitalWrite(WRITE, LOW);
// Set Data
switch (pattern) {
case RANDOM_1:
case RANDOM_2:
digitalWrite(D, patterns[pattern][col] ? HIGH : LOW);
break;
case ALL_HIGH:
digitalWrite(D, HIGH);
break;
case ALL_LOW:
digitalWrite(D, LOW);
break;
case ALTERNATING_1:
digitalWrite(D, col % 2 ? HIGH : LOW);
break;
case ALTERNATING_2:
digitalWrite(D, col % 2 ? LOW : HIGH);
break;
}
// Set column address
digitalWrite(A0, bitRead(col, 0));
digitalWrite(A1, bitRead(col, 1));
digitalWrite(A2, bitRead(col, 2));
digitalWrite(A3, bitRead(col, 3));
digitalWrite(A4, bitRead(col, 4));
digitalWrite(A5, bitRead(col, 5));
digitalWrite(10, bitRead(col, 6));
digitalWrite(11, bitRead(col, 7));
// Pull CAS LOW
digitalWrite(CAS, LOW);
digitalWrite(RAS, HIGH);
digitalWrite(CAS, HIGH);
}
}
int readBits(int pattern, int row) {
// Bit counter
int numberOfBits = 0;
// Pull RAS, CAS and Write HIGH
digitalWrite(RAS, HIGH);
digitalWrite(CAS, HIGH);
digitalWrite(WRITE, HIGH);
// Loop though all the columns
for (int col=0; col<=255; col++) {
// Set row address
digitalWrite(A0, bitRead(row, 0));
digitalWrite(A1, bitRead(row, 1));
digitalWrite(A2, bitRead(row, 2));
digitalWrite(A3, bitRead(row, 3));
digitalWrite(A4, bitRead(row, 4));
digitalWrite(A5, bitRead(row, 5));
digitalWrite(10, bitRead(row, 6));
digitalWrite(11, bitRead(row, 7));
// Pull RAS LOW
digitalWrite(RAS, LOW);
// Set column address
digitalWrite(A0, bitRead(col, 0));
digitalWrite(A1, bitRead(col, 1));
digitalWrite(A2, bitRead(col, 2));
digitalWrite(A3, bitRead(col, 3));
digitalWrite(A4, bitRead(col, 4));
digitalWrite(A5, bitRead(col, 5));
digitalWrite(10, bitRead(col, 6));
digitalWrite(11, bitRead(col, 7));
// Pull CAS LOW
digitalWrite(CAS, LOW);
// Read the stored bit and compare
int expect;
switch (pattern) {
case RANDOM_1:
case RANDOM_2:
expect = patterns[pattern][col] ? HIGH : LOW;
break;
case ALL_HIGH:
expect = HIGH;
break;
case ALL_LOW:
expect = LOW;
break;
case ALTERNATING_1:
expect = col % 2 ? HIGH : LOW;
break;
case ALTERNATING_2:
expect = col % 2 ? LOW : HIGH;
break;
}
if (digitalRead(Q) != expect) {
return col;
}
// Pull RAS and CAS HIGH
digitalWrite(RAS, HIGH);
digitalWrite(CAS, HIGH);
}
return -1; // OKAY!
}