Table of Contents
VGA6448, A Text-based Monochrome VGA display, Rev2
Introduction
VGA6448 is initially discussed on 6502.org forum here: It is designed as a video expansion board for RC6502 based computer.
This is link to prototype VGA6448
Features
- Two EPM7064S or ATF1504AS CPLD
- 4K dual port RAM
- 25.175MHz clock
- RC6502 expansion bus
Design Information
Bill of Materials
Engineering changes
CPLD design files
- CPLD design file for U1, VGA generator
- CPLD design file for U3, PS2 Keyboard state machine
Software
Interim release of CRCMon v0.9b. Commands can be entered either via terminal emulator or PS2 keyboard. Data displayed are sent to both VGA monitor as well as terminal emulator.
