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From: bridger@RAND-UNIX.ARPA.UUCP
Newsgroups: comp.os.cpm
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Message-ID: <8705151700.AA17129@rand-unix.arpa>
Date: Fri, 15-May-87 12:59:56 EDT
Article-I.D.: rand-uni.8705151700.AA17129
Posted: Fri May 15 12:59:56 1987
Date-Received: Sat, 16-May-87 15:23:13 EDT
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Good news and bad news:

A new OS for -180 systems is under development.  It will support ZCPR33
plus some major new features, including larger tpa and bank memory management.

Meanwhile, if you are running an SB180 or SB180FX, Malcolm Kemp's
almost-released XBIOS will have most of the bios banked, disk cache,
and other features.  It's a worthwhile intermediate solution.

Finally, you can increase TPA in a "full" Z-System by assembling it
without allocating space for IOP and/or RCP buffers.  Many users
make little or no use of the IOP.

However, the ZRDOS (all versions) as it stands cannot be bank-switched.
It, like CP/M 2.2, uses 3.5K of tpa.

--bridger