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INTRODUCTION GALmate is a GAL® multi-platform programmer for electronic hobbyists. A simple RxD/TxD UART interface keeps the connection effort to a minimum. This easy-to-build circuit uses industry standard components. HARDWARE FEATURES SOFTWARE FEATURES LET’S GET STARTED The Basics Starting point: I’d like to realize a (simple) logic design using a reconfigurable (programmable) logic device (PLD).Requirements:… Read more GALmate
Introduction This information is related to the programming mode of the PLDs listed below. Find more details in the Download section. GAL pinouts for EDIT mode GAL16V8/ATF16V8 GAL20V8/ATF20V8 GAL22V10/ATF22V10 GAL20XV10 GAL20RA10 GAL18V10 GAL26V12C GAL26CV12 GAL6001 GAL6002 GAL/ATF Architecture 16V8 & 20V8 detailed ACW bit information 16V8, 20V8 & 22V10 Row Addresses Map Block Diagram Download… Read more GAL specific information
OVERVIEW The GALmate application lets you read and programm GAL devices.Whereas easyABEL and vDosPlus software provide a compiler suitable for ABEL-HDL design files. The compiler (easyABEL) and vDosPlus are optional. The application and related documents are provided in the download section below. FEATURES Sytem Requirements and Installation Operating System Windows 7 or later(Linux and OS… Read more GALmate software
INTRODUCTION FLOPPYmate requires a high speed data transfer to read/write an entire track within a single disk revolution. This task requires a data transfer rate of at least 40KB/s. High speed (>8 KB/s) data transfer from or to a 1541 Disk Drive is commonly achieved using a 8 bit parallel cable connected to Port A… Read more 6522 Fast Serial Driver
INTRODUCTION Troubleshooting a dead C64 often reveals a faulty PLA IC as the root cause. The PLA does the address decoding and bank switching. SIGNETICS 82S100 (later PHILIPS PLS100) Bipolar Programmable Logic Arrays were used in early revisions of the C64 Mainboard assy, which were then replaced by MOS 8700-001 and MOS 906114-01. This blog… Read more C64 PLA Replacement
INTRODUCTION The C64 can only work properly with stable clocking. In a C64 II the MOS 8701 IC generates two major clocks and maintains the fixed frequency and phase relationship. COLOR_CLK is the main crystal oscillator clock and DOT_CLOCK is derived thereof. This blog presents a replacement circuit for the MOS 8701 IC. Orginal MOS… Read more C64 MOS 8701 Replacement