0%

0%

Baffa-2 Printer Interface

Making Baffa-2 Homebrew Computer print like old school computers

Following Follow project

Liked Like project

Become a Hackaday.io member

OR

Just one more thing

To make the experience fit your profile, pick a username and tell us what interests you.

OK, I'm done! Skip

Similar projects worth following

Description

This is a Parallel IO Interface based on SC103 Z80 PIO board by Stephen Cousins (https://smallcomputercentral.wordpress.com/sc103-z80-pio-module-rc2014/) with some modifications to support a DB25 connector.

The prototype board has been tested with my CP/M machine (see Baffa-2 Homebrew Computer at https://hackaday.io/project/183266-baffa-2-homebrew-microcomputer) but can there is another board layout compatible with RC2014 pinout.

For my next step, I will adapt the Baffa-2 Bios (which is based on Grant Searle's Bios) to natively support the printer as LPT (Standard line printer) output.

Details

This is a demonstration of how the printer interface works.

The next step is to update the BIOS Rom for the Baffa-2 computer to support the printer via CP/M. The BIOS is sourced from Grant Searle and adapted for Baffa-2.

I am proud to say that this project is sponsored by PCBWay.

Files

schematics_RC2014_Parallel_IO.pdf RC2014 Parallel I/O Schematics Adobe Portable Document Format - 149.65 kB - 05/28/2022 at 01:53		Preview

schematics_Baffa2_Parallel_IO_rev1.pdf Baffa-2 Parallel I/O Schematics Adobe Portable Document Format - 149.60 kB - 05/28/2022 at 01:53		Preview

PDEMO.BAS Baffa-2 PIO - PRINTER DEMO bas - 890.00 bytes - 04/18/2022 at 03:47		Download

Components

4 × 100nf Capacitor
1 × 100uf Polarized Capacitor
1 × 10k Resistor Network
1 × 74LS08N Logic ICs / Gates and Inverters
1 × 74LS688N Logic ICs / 8-bit Magnitude or Identity Comparator

View all 11 components

Project Logs

Collapse

PCBWAY
Augusto Baffa • 05/28/2022 at 02:01 • 0 comments
This project is proudly sponsored by PCBWay
- Order Baffa-2 Printer Interface PCB from PCBWay
- Order RC2014 Printer Interface PCB from PCBWay
RC2014 Printer Interface
Augusto Baffa • 05/28/2022 at 01:57 • 0 comments
Baffa-2 Printer Interface Layout
Augusto Baffa • 05/28/2022 at 01:57 • 0 comments

View all 3 project logs

Build Instructions

Collapse

1

Schematics for Baffa-2 Printer Interface
2

Schematics for RC2014 Printer Interface

View all instructions

Discussions