Table of Contents
VGA6448, A Text-based Monochrome VGA display
Introduction
VGA6448 is initially discussed on 6502.org forum here: It is a simple design suitable as a piggy-back board for system RAM to add VGA capability.
Features
- EPM7064S or ATF1504AS CPLD
- 4K dual port RAM
- 25.175MHz clock
Theory of Operation
Design Files
Schematic
CPLD design
Software
Matrix screen saver. The program starts at $a000
