![]() Currently, it seems all this was easier on a linux system, rather than the starting windows machine. Programming the ROM was carried out with the EEPROM programmer and this software. Easy fix, just take the time to look at what this lovely monitor is trying to tell you and update your input probe wiring configuration. Here you will know if you flipped the pins, as the expected, for example ‘10001111’ would be ‘11110001’. Luckily, there is an output on the Serial Monitor. Less expensive, however over the project, you will dedicate much time to connecting each pin, and in the proper order. Testing connections was carried out with the MEGA Arduino connection ports, no fanciness with expensive purchase, as Ben states within one of his videos. Ultimately it is making use of a Western Digital 65c02 processor chip, Western Digital 65c22 versatile interface adapter, common NAND gate (4) chip, ATMEL AT28c256 ROM chip, Hitachi HM62256LP-70 RAM (used as a stack) chip, Hitachi LCD, knob dial for LCD contrast input, resisters, capacitors, 5V input, 1Mhz clock chip, and assorted 20mm insulated wires - on a few breadboards. The Ben Eater kit for the 6502 processor arrived, the challenge was gladly accepted. This desire was one that could not be fulfilled by Arduinos or Micro:bits, it needed to be installing wires and use something other than a GUI with code blocks. Since the OSU course 271, intro to computer architecture and assembly, there has been a desire to build a physical model of a computing machine. The kit and some associated video links can be found here. There was a kit online, found awhile back, and this seemed to be a great time to roll up the sleeves and begin working on wiring, programming, and testing a mini computer. There was finally a week to spend time diving into learning about software-hardware interaction. ![]()
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