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- Date: 21 Nov 1982 at 1705-CST
- From: mknox at Utexas-11
- To: info-cpm at BRL
- Re: Model-II
-
- There are a number of CP/M implementations for the Model-II. Briefly, (and
- in my own humble opinion):
-
- o P&T -- I agree with your complaints, but feel that theirs is the best
- overall product for the price. The provide very good documentation
- (a rare bird indeed). They support a variety of disk drives, both
- hard and soft. They provide a good supply of useful, well written
- utilities. And they provide good customer support (except for certain
- policies like not providing source). Only one other complaint; the
- double density disk format they chose is a little strange, 16 sectors
- of 512 bytes (most use 15 x 512). This does provide more storage
- than others, but is very hard to read on other machines.
-
- o Lifeboat -- The other current major supplier. Not as good an implementation
- as P&T, and with the usual Lifeboat support (one customer I know of is
- still waiting for an answer to his question after 2 years!). Does
- support 8 x 1k disk sectors.
-
- o CPU SHOP and FMG -- sold a lot of copies early on, but have mostly faded
- away, at least as a CP/M Model-II supplier. More expensive.
-
- o ATON -- one of the best jobs of fully utilizing the Model-II hardware that
- I have seen. Only a little more expensive. Fair documentations,
- actually quite good for a hacker, not near as good as P&T if you are
- a business turnkey type. The ATON version(s) support disk caching
- through extra memory cards, and also concurrent operations using
- multiple banked memory cards. I have no direct experience running
- the system (called JOBSTREAM), but careful review of the manuals
- makes it look like it was done by a hacker who knows his way around
- a system. ATON has only had it out a few months.
-
- Conclusion: I'd still go with the P&T. Most products now support it (Word-
- star, dBASE, etc.), where some of the other implementations may require
- some effort to install application packages. [Side note: the P&T
- makes full use of the CRT capabilities, much better than Lifeboat]
- I am recommending P&T to those who ask me; and using it as a base
- for a Model-16 or Model-II Enhanced CP/M-68K implementation.
-