Glen *** : E&L Instruments Fox 1 Z80 Trainer chip questions
robo58 at optonline.net
Tue Oct 11 07:20:10 CDT 2005
Thanks for the assistance. Its now up and running.
Can you advise where I might get information on the various ports on both
boards and/or documentation on the trainer?
----- Original Message -----
From: "Glen Slick" <glen.slick at gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Monday, October 10, 2005 6:38 PM
Subject: Re: E&L Instruments Fox 1 Z80 Trainer chip questions
> On 10/10/05, ROBO5.8 <robo58 at optonline.net> wrote:
>> Hi Folks,
>> I recently obtained a used E&L Instruments MT-80Z microprocessor trainer.
>> My goal is to teach my kids a little about microprocessors.
>> The trainer has 3 empty IC sockets U1-40 pin, U10-40 pin and U-11-28 pin.
>> The parts are missing on the board that contains the keyboard and 7
>> displays. Neither of which work, so I suspect those empty sockets
>> require a
>> chip or two for operations.
>> The parts are probably Zilog or Intel PIO's and a CTC (Counter Clock
> Good guess. U10 is an optional PIO. U11 is an optional CTC. U1 is
> where the Z80 goes in the MPF-1. On the MT-80Z the Z80 is moved to
> the second PCB and U1 is empty on the original PCB.
> Schematics for the original MPF-1 board can be found here:
> I have never found an online schematic or manual for the MT-80Z. The
> monitor EPROM in the MT-80Z I have is slightly different than the
> monitor EPROM in the MPF-1, but I think the changes are very minor.
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