Discover go4retro/TwoMegCoCo Open Source project

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TTL logic, SRAM based 2048kB (2MB) RAM expansion solution for the TANDY Color Computer 3

tcpser

Hayes modem emulator application

UltiMem64

Commodore 64 Internal RAM Expansion with integrated MMU

Verilog

xpander-3

Commodore 64/SX/128 4 port passive cartridge port expander

ZoomFloppy

Commodore IEC/IEEE disk drive to USB interface

Nu6509

Emulate a 6509 with a 6502

Verilog

Nu6510

65(C)02 to 6510/8500 converter

Verilog

TurboMaster

Reverse Engineering of the Schnedler Systems 4MHz TurboMaster accelerator cartridge for the Commodore 64

Verilog

Nu7501

65(c)02 to 7501/8501 converter

HTML

c-key

23XXAdapter

MOS 2316/32/64 to JEDEC 27XX(X) Adapter

CocoFLASH

Tandy Color Computer CocoFLASH

Assembly

Simple64Cart

Simple EPROM-based C64 and C128 cartridge PCB designs

64NIC

Commodore 64 Network Interface Card

HEXTIr

TI HEX-BUS SD Drive Interface

C++

TurboCPU

Verilog

2364Adapter

MOS 2364 to JEDEC 27XX(X) Adapter

EAGLE_lbr

Various EAGLE libraries I am using

CoCoMEMJr

2MB RAM Expansion for the TANDY Color Computer 1 and 2 and the Dragon computers

Verilog

DRAMCarrier

An 8 4164 to 2 4464 conversion PCB for various Commodore 64 motherboards

Nu8500

65(c)02 to 8502 converter

Verilog

PS2Encoder

PS/2 to Serial/Parallel ASCII Encoder

FlashPak

512kB FLASH ROM Cartridge for the TANDY Color Computer and Dragon Data Dragon System

Assembly

2564Adapter

MOS 2564 to JEDEC 27XX(X) Adapter

CoPro09

6X09 Coprocessor system for the Commodore 64/128

Verilog

2732Adapter

JEDEC 2732 to JEDEC 27XX(X) Adapter

EasyFlash3

A fork of skoe's EF3 codebase to merge in changes through the years

Assembly

Philharmonic12

Reproduction of the Speech Systems Symphony 12 multi-voice sound cartridge for the TANDY Color Computer

Assembly

Nu6550

Modern replacement for the MOS 6550 1kbx4 SRAM

6540Adapter

MOS 6540 to JEDEC 27XX(X) Adapter

6500Dump

MOS 6500/1 Microcontroller ROM Reader

Assembly

Fake6523

MOS 6523 TPI (Tri Port Interface) CPLD replacement

Verilog

DigiMAX

A 4 channel 8-bit external DAC for the Commodore 8-bit line

23128Adapter

MOS 23128 to JEDEC 27XX(X) Adapter

VIC-MIDI

Commodore VIC-20 MIDI/RS232/RAM/FLASH cartridge

Verilog

PLAdapter

Simple EPROM-based PLA emulator

Nu2031

Enable a Commodore CBM 1541 disk drive to also function as a CBM 2031LP IEEE drive

HTML

PETKey

Commodore VIC/64 KB to PET/CBM Adapter

Makefile

Fake6500-1

Atmel ATMEGA162 to MOS 6500/1 Converter

Nu6551

Atmel AVR uC 6551 implementation

Makefile

IEEEAdapter

Commodore .156" 12/24 IEEE to Centronics 24 connector adapter

CC40_RAMCart

512kB Battery Backed RAM Cartridge for the TI CC-40

CoCoSDCExt

Additional functionality for the Color Computer CoCoSDC cartridge

Verilog

Dual6X09

Dual 6X09 Adapter Schematic and Printed Circuit Board v1.0

Masc-uerade

A simple interface that (might :-) allow 64 cartridges to be used on the Commodore VIC-20

SuperPET_OS9_MMU

TPUG OS9 MMU Reproduction

C2NPower

CoCoQuadLink

4 port TANDY Color Computer RS232 Pak

UltiMEM

8 Megabyte FLASH ROM/1 Megabyte SRAM VIC-20 Memory Expansion

Verilog

MIDIMaestro

TANDY Color Computer 1/2/3/Dragon MIDI Interface

DrivePlexer

34 pin floppy drive multiplexer (convert discrete DRV1,2,3 to binary drive address)

ROM-el

ROM eliminator FLASH Replacement

uIEC-bootloader

FAT16/FAT32 bootloader for Atmel AVR MEGA based uIEC

HexBusAdapter

TI HexBus <-> DockBus Adapter

QuadPortIEC

CoCoLink

Verilog

IntUltiMEM

Internal version of the UltiMEM cartridge

Verilog

PowerLED

A multi-purpose power LED replacement

Makefile

Xtender-Coco

TANDY Color Computer/Dragon cartridge port extender

PhantomRAM

Verilog

HEXTIr-bootloader

Fork of uIEC-bootloader for HEXTIr Atmela MegaAVR-based HexBus storage device

CC40_ROMCart

512kB Multi-Bank ROM Cartridge for the TI CC-40

Dual6X03

HalfMegCoCo

An SRAM-based 512kB RAM Expansion for the TANDY Color Computer 3

BoomerangLED

Quick interrupt driven util to drive the Color Computer 3 Boomerang 2MB memory expansion DAT board LED

Assembly

MAX-6566-Adapter

Minimized layout of Christian Forstreuter's 6566->6567 Adapter

tcpser4j

Java version of tcpser, the Hayes modem emulator

Java

go4retro/TwoMegCoCo

go4retro

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