RETRO Innovations

tcpser. Hayes modem emulator application

140

UltiMem64. Commodore 64 Internal RAM Expansion with integrated MMU

37

xpander-3. Commodore 64/SX/128 4 port passive cartridge port expander

33

ZoomFloppy. Commodore IEC/IEEE disk drive to USB interface

29

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

26

64NIC. Commodore 64 Network Interface Card

26

Nu6510. 65(C)02 to 6510/8500 converter

24

Nu6509. Emulate a 6509 with a 6502

21

23XXAdapter. MOS 2316/32/64 to JEDEC 27XX(X) Adapter

20

c-key. C

19

Nu7501. 65(c)02 to 7501/8501 converter

18

HEXTIr. TI HEX-BUS SD Drive Interface

16

TurboCPU. Verilog

16

CocoFLASH. Tandy Color Computer CocoFLASH

15

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

14

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

14

Simple64Cart. Simple EPROM-based C64 and C128 cartridge PCB designs

13

PS2Encoder. PS/2 to Serial/Parallel ASCII Encoder

13

2364Adapter. MOS 2364 to JEDEC 27XX(X) Adapter

12

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

12

EAGLE_lbr. Various EAGLE libraries I am using

10

2564Adapter. MOS 2564 to JEDEC 27XX(X) Adapter

9

Nu8500. 65(c)02 to 8502 converter

9

CoPro09. 6X09 Coprocessor system for the Commodore 64/128

9

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

8

2732Adapter. JEDEC 2732 to JEDEC 27XX(X) Adapter

8

Philharmonic12. Reproduction of the Speech Systems Symphony 12 multi-voice sound cartridge for the TANDY Color Computer

8

CoCoSDCExt. Additional functionality for the Color Computer CoCoSDC cartridge

7

23128Adapter. MOS 23128 to JEDEC 27XX(X) Adapter

7

C128-Z80Plus. Double the clock speed of Z80 in C128

7

EasyFlash3. A fork of skoe's EF3 codebase to merge in changes through the years

7

Nu2031. Enable a Commodore CBM 1541 disk drive to also function as a CBM 2031LP IEEE drive

7

6540Adapter. MOS 6540 to JEDEC 27XX(X) Adapter

6

ROM-el. ROM eliminator FLASH Replacement

6

Nu6550. Modern replacement for the MOS 6550 1kbx4 SRAM

6

PowerLED. A multi-purpose power LED replacement

6

Fake6523. MOS 6523 TPI (Tri Port Interface) CPLD replacement

6

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

6

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

6

6500Dump. MOS 6500/1 Microcontroller ROM Reader

6

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

6

WriteROM. Programmable ROM that requires no write line

5

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

5

QuadPortIEC.

5

Fake6500-1. Atmel ATMEGA162 to MOS 6500/1 Converter

5

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

5

CC40_RAMCart. 512kB Battery Backed RAM Cartridge for the TI CC-40

4

IntUltiMEM. Internal version of the UltiMEM cartridge

4

PLAdapter. Simple EPROM-based PLA emulator

4

Nu6551. Atmel AVR uC 6551 implementation

4

PETKey. Commodore VIC/64 KB to PET/CBM Adapter

4

SuperPET_OS9_MMU. TPUG OS9 MMU Reproduction

4

PhantomRAM. Verilog

3

uIEC-bootloader. FAT16/FAT32 bootloader for Atmel AVR MEGA based uIEC

2

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

1

Xtender-TI74. Simple port extender

1

ti74. Technical Information for the TI74

1