nrivard

TCPU816-ALPHA1

Alpha 1 version of my TCP816, 8-bit TTL computer.

xv6-riscv

Xv6 for RISC-V

mackerel-68k

A series of 68000 computers designed to run Linux

Computer-Science-Textbooks

Collect some CS textbooks for learning.

xv6-rosco-r2

RISC-V-Single-Cycle-Processor

Single Cycle Processor written in SystemVerilog for executing machine code of RISC-V ISA

tn_vdp

Tang Nano 9K TMS 9118A VDP

FUZIX

FuzixOS: Because Small Is Beautiful

rhyophyre

Single Board Computer featuring Zilog Z180 processor and NEC µPD7220 Graphics Display Controller

rosco_m68k

Design, documentation and software for the Really Old School Computer (M68K)

68000

Code related to the Motorola 68000 microprocessor.

BeebEater

BBC BASIC for Ben Eater's 6502 breadboard computer

ay-3-8910-midi

An interface from a PC through an Arduino to an AY-3-8910 / YM 2149

atf1504_plcc44_breakout

Breakout board for Atmel's ATF1504 or ATF1502 CPLDs in a PLCC-44 socket

ES688_ISA8

Sound Card for the ISA (8bit) bus sporting Sound Blaster / Sound Blaster PRO emulation via ES688F chip, and a real Yamaha OPL3 FM Synth. It's also completely jumper configurable.

Internal_ISAOPL3

Internal ISA OPL3 for PCXT and compatibles.

hoard-of-bitfonts

turns out I like bitmap fonts

RootlessForEmulators

A little example of how one would implement a rootless display for an emulator that uses one large back buffer (like MacOS 9 would).

5Vpld

A collection of scripts and tools for Atmel ATF150x and GAL Programmable logic devices, some of the only standing active 5V programmable logic parts still available.

m68k-basic

EhBasic 68000 converted to GAS assembler

macboot

bootloader for classic Macintosh (m68k)

vrEmuTms9918

TMS9918A emulator library (C99)

Resound-2-MCA-OPL3

Microchannel OPL3 Based Sound Card / Adlib Compatible

hbc-56

Homebrew 65C02 computer on a backplane

TMS9918

Various documents for the TMS9918 VDP

Ultim809

Schematics, design files, and software for my Ultim809 homebrew 8-bit computer.

MSX

Coletânea de projetos para MSX

we816

The WE816 is a 16-bit 65816 based system with 512K of System RAM, 96K of System ROM, 32K of video RAM, a TMS9918 graphics processor and an AY-3-8910 Sound chip. The system runs a custom version of BASIC and supports commodore compatible IEC disk drives.

Digital-Logic-Sim

GALBinaryTo7Seg

8 bit binary displayed as hex on two 7 segment displays (a bus monitor)