civil25 - An 8088 SBC

A 8088 based SBC. 512k of RAM. 256k of ROM.

This is a simple 8088 based SBC that doesnt aim for any kind of PC compatibility. This is just generally a project to learn about the 8088 and other processors.

Current assembler in use is NASM. I am working on the Currently in progress goals listed below, as well as software to support it along the way.

Current Parts List

• 1x 80c88 CPU
• 2x 74HCT373 D-type Octal Latch
• 1x 74HCT245 Bus Trancever
• 2x 74HCT138 3-to-8 Decoder
• 1x SST39SF020A Flash
• 1x AS6C4008 RAM
• 1x 82c55A PPI
• 1x 82c59 PIC
• 1x 555/8284 Clock Generator(And supporting circuitry)
• 1x YM3812 FM Sound
• 1x TL072 Op-Amp
• 1x Y3014B DAC
• 1x LCD
• 100000x Jumper Wires

Completed

• Base Computer
• 82c55 I/O plus LCD
• YM3812
• Schematics

Currently in progress

• 82c59 Programmable Interrupt Controller
• PS/2 Keyboard
• Video Card using SCN2674B
• Add SD Card
• Real Time Clock + Battery

Future additions (Hardware)

• PCB - Mini ITX - Compatible with ATX PSU's
• Ethernet - Currently looking at the W5100S-L
• DMA Controller (82c57)
• Timer (82c53/82c54)
• CMOS RAM to maintain system settings

Future Aditions (Software)

• C Compiler
• Make BIOS
• Make Kernel
• Make C Standard Library
• Make UNIX Operating System