Norberto’s H8 Computer
Z89-47 and WH8-H47 Schematics
WH8-47 Schematics.zip
Z89-47 Accessory Manual.pdf
H47 Interface and Serial I_O Card Model WH8-47.pdf
H47 RS-232 Block Diagram.pdf
H-47 Serial I_O Troubleshooting Chart.pdf