11 Oct
2005
11 Oct
'05
5:20 a.m.
Hi Glen
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?
Thanks Robo
----- 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
segment
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
Timer).
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:
http://themotionstore.com/leeedavison/z80/mpf1/index.html
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.