The most straightforward approach is to use one of the printers that Heathkit sold, as those were tested/supported. That would be the H14, Diablo KSR 1640 or DECwriter (LA-34 or -36), Texas Instruments TI-810 or Heath/Zenith Z-25/H-25. I believe those are supported “out of the box” in HDOS 2 and CP/M 2.2.03.
The Epson MX-80 was popular and is supported in the CP/M 2.2.04 Configur program so that’s an option, but it *must* be the serial version (the parallel version became popular on the IBM PC. You can use a parallel MX-80 but will need to add hardware and configure software which is something you said you didn’t really want to tackle).
I used the C. Itoh Prowriter 8510a serial printer and have a driver for that which I can share. I’m sure there are REMark articles on how to configure printers.
Bottom line is most any serial printer should work for you. If you need help there are plenty of folks on this list who can help get the settings right I would think.
If anyone wants to add a parallel printer to their H8 that’s now enabled by Norberto’s H8 PPIO card and there may even be some of the older H89 parallel boards available? I believe we have the BIOS configurations and/or HDOS device drivers to use if anyone is interested…
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The Heathkit solution for parallel interfacing was the H-8-2 which actually used the 8251 USART to interface to the CPU and then that talked to the parallel I/O side. It always seemed like an awkward design (vs. just using an Intel 8255 PIO chip) but it had the advantage that you could continue to use the drivers and BIOS setups which supported the 8251.
I agree that most tweaks to drivers or BIOS are pretty straightforward and those in this group could help Mitch out with any issues…
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From: se...@googlegroups.com <se...@googlegroups.com> On Behalf Of norberto.collado koyado.com
Sent: Tuesday, September 21, 2021 2:30 PM
To: SEBHC <se...@googlegroups.com>
Subject: Re: [sebhc] Printer for H8
Can you fix such link as it is broken?
Norberto
From: se...@googlegroups.com <se...@googlegroups.com> on behalf of William Lindley <lindley...@gmail.com>
Sent: Tuesday, September 21, 2021 11:22 AM
To: SEBHC <se...@googlegroups.com>
Subject: Re: [sebhc] Printer for H8
You might look at the Lindley Systems Ultimate Drivers at https://www.wlindley.com (under Heritage Products). The complete source code for both HDOS and CP/M drivers, and a schematic for an H-89 parallel board you can build, are all included. I released those as Public Domain some years ago now. They support Epson, Star, MPI, NEC/C.Itoh, Okidata, and several other printer makes.
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