ROM-Based 6502 Assembly

Date
7 November 2025	Assigned
14 November 2025	Due
Fundamental
Hack

Introduction

Your goal for this lab is to finish the build of our 6502-based computers. Here, you have two options to complete the task:

• a FUNDAMENTAL which finishes integrating the 6522
• a HACK which adds RAM to your PC using the 62252 SRAM module

Each branch features a test program that proves your setup.

Branch	Test ROM
FUNDAMENTAL	6522 Interface Test
HACK	62252 SRAM Test

These repositories provide the source as well as the compiled ROMs (also included in the course schedule.

Instructions

You must complete and demonstrate this program to an instructor or TL using your breadboard and associated parts. This can be done any time during the duration of the assignment until the due date.

In addition, you must record your findings in the report.md file in the docs/ directory. This documentation will require you to fill in some truth tables, provide some breadboard layouts, and explain how each of the circuits work, ostensibly. The report also contains a table for the instructor or TL to fill out when programs are demonstrated. Again, this table must be filled out by the instructor or a course TL. (This means that you'll have to have commits authored by one of these folks!)

Assignment "Hack"

This assignment's HACK asks you to wire the 62252 SRAM chip in order to gain access to writeable memory (SRAM) using the test program to evidence that your 6502 setup is complete.