Original URL : https://retrobrewcomputers.org/doku.php?id=builderpages:plasmo:k80
 Snapshot date: 2021-10-21
 Generator    : wayback-archiver

K80 is a traditional SBC design using a KIO (Z84C9012) and over-clocked to 22MHz. It also has 2 RC2014 40-pin expansion connectors.

Z80 with 64K EEPROM and 128K RAM,

Z80 overclocked to 22MHz,

EEPROM in four 16K banks, bootstrap from any of the 4 banks via jumper selection,

Sixteen 16K banked memory,

KIO, Z84C90, is the integrated I/O interface,

DS1302 Real Time Clock,

Compact Flash interface,

CP/M-ready,

Two 40-pin RC2014 expansion slots,

100mm X 100mm, 2-layer PC board,

Designed for RC2014.

Schematic of K80

Gerber photoplots of K80

Altera EPM7064SLC44 design file

K80 Monitor. Hex file to be programmed in the W27C512.

CP/M2.2 for K80. CP/M2.2 BDOS/CCP/BIOS

Getting started with K80

K80 Monitor guide

Installing software on a new CF for K80

Pictorial Assembly Guide