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Re: Progress with the 8080 board

To: n8vem-s100@googlegroups.com
Subject: Re: Progress with the 8080 board
From: Frank Schieschke <f.schi...@googlemail.com>
Date: Wed, 30 Jul 2014 23:30:01 -0700 (PDT)
Cc: crus...@hotmail.com, mon...@vitasoft.org
In-reply-to: <001a01cfac26$42157170$c6405450$@vitasoft.org>
References: <001a01cfac26$42157170$c6405450$@vitasoft.org>

Josh, don't do this.
There are some older S-100 boards which use the upper 8 Bit for decoding the I/O addresses (e.g. the MITS TurnKey board).
For me it works fine with the 8080 CPU board, but when i switch to the Z80 board, it doesn't work anymore.
It required some changes, to leave the TurnKey board in its original state by getting it to work with the lower 8 Bits.
http://www.vintage-computer.com/vcforum/showthread.php?36878-Altair-8800b-T-Turnkey-board

Frank

References:
- Progress with the 8080 board
  - From: "John Monahan" <mon...@vitasoft.org>

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