The GameTank Wiki

codebanks

clyde (clyde@undisclosed.example.com) — 2026-02-23T19:05:53+00:00

Putting code into the PROGx banks To get more room for code, you can create a number of extra “PROG” banks as declared in project.json. Once you've created those banks, you'll need to mark your functions and variables to indicate when they live in a non-default bank.

flashcarts

dewbrite (dewbrite@undisclosed.example.com) — 2025-11-16T03:25:38+00:00

Flash Cartridges Cartridges connect to the GameTank's 36 pin cartridge port. Pinout 1. +5V 19. A132. VIA PA2 20. _WRITE 3. VIA PA7 21. _IRQ 4. VIA PA1 22. A8 5. VIA PA0 23. A9 6. A12 24. A11 7. A7 25. _READ 8. A6 26. A10 9. A5 27. _SEL 10. A4

cartridge_port_screenshot.png - created

dewbrite (dewbrite@undisclosed.example.com) — 2025-11-15T18:55:31+00:00

spec - Restate goal.

rom (rom@undisclosed.example.com) — 2025-11-08T00:36:23+00:00

" GameTank's got games GALORE." Status: Proposed Summary GALORE is project to bring an online cartridge explorer to the GameTank, made possible by a (newly proposed) peripheral to provide the 6502 with FIFO buffer access to the internet. Hardware Overview

start - Add expansion section and new peripheral spec.

rom (rom@undisclosed.example.com) — 2025-11-07T08:41:24+00:00

The GameTank is an 8-bit game console based on the W65C02S, a 6502-family CPU from Western Design Center. It has a 128×100 pixel display with 200 unique colors, two controller ports on the front, a general purpose IO header on the back, and a 36-pin cartridge port on top.

format

dewbrite (dewbrite@undisclosed.example.com) — 2025-09-26T11:04:48+00:00

Graphics Format The GameTank's standard video hardware renders a 128×128 pixel framebuffer to a color composite video signal. On a typical television about 100 horizontal lines will be visible. The image is presented with borders on the left and right side, the color of which is determined by the rightmost pixel in the buffer.

gamepads - created

clyde (clyde@undisclosed.example.com) — 2025-09-20T02:38:16+00:00

Gamepad Ports The front gamepad ports can be read at $2008 and $2009. Writing to these addresses will not do anything. A byte read from one of these locations will return 6 binary button states from the respective controller. Consecutive reads to the same port will toggle the “select” line on the controller port, causing the controller to change which six button states are being returned. More on reading gamepads can be found in its own article.

emulator_oem

clyde (clyde@undisclosed.example.com) — 2025-09-09T01:13:56+00:00

The GameTank Emulator The GameTank has an emulator that was developed alongside the hardware and continues to be improved as both a software development tool and a wrapper for GameTank binaries to run on modern desktop, laptop, and mobile devices.

audio - [The DAC]

clyde (clyde@undisclosed.example.com) — 2025-04-08T15:53:37+00:00

Audio CoProcessor The GameTank's audio system, referred to as the Audio Coprocessor or ACP, is a 65C02-based subcomputer that computes PCM samples and outputs them to a digital-to-analog-converter. The ACP consists of a 65C02 processor, a 4K dual-ported RAM that is shared with the main system's memory map, a programmable timer that triggers the 65C02's IRQ at regular intervals, an 8-bit DAC, and a buffer register.

palette.png - created

clyde (clyde@undisclosed.example.com) — 2024-12-28T16:36:45+00:00

screenshot_2023-12-17_142802.png - created

clyde (clyde@undisclosed.example.com) — 2023-12-17T19:28:20+00:00

screenshot_2023-12-17_133151.png - created

clyde (clyde@undisclosed.example.com) — 2023-12-17T18:31:59+00:00

screenshot_2023-12-17_132441.png - created