[sebhc] H89 roms

Barry Watzman Watzman at neo.rr.com
Wed Dec 14 16:20:14 CST 2005

Agreed it can be done, but you not only need to do the flipping, you need to
do the copying, because a normal CP/M call while the rom was "in" would
crash the system.

-----Original Message-----
From: sebhc-bounces at sebhc.org [mailto:sebhc-bounces at sebhc.org] On Behalf Of
Lee Hart
Sent: Wednesday, December 14, 2005 2:41 PM
To: sebhc at sebhc.org
Subject: Re: [sebhc] H89 roms

Barry Watzman wrote:
> You can't do this on a machine that is configured to Run CP/M (unless,
> perhaps, you do it from HDOS), because once you start CP/M, the Rom is
> removed from the memory map.  But, otherwise, you are correct, it can be
> read and saved on the computer itself.

Except that the ROMs can be flipped in and out. You need a little program to

do it, but it can be done even in BASIC.
Lee A. Hart    814 8th Ave N    Sartell MN 56377    leeahart at earthlink.net
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