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- Path: sparky!uunet!peora!usenet.ccur.com!catfish!tsdiag!ocpt!pechter
- From: pechter@ocpt.ccur.com (Bill Pechter)
- Newsgroups: comp.sys.dec.micro
- Subject: Re: Rainbow 100+
- Message-ID: <1765@ocpt.ccur.com>
- Date: 9 Dec 92 18:42:09 GMT
- References: <1992Dec4.112639.5884@ais.com> <1992Dec6.181856.15863@cs.wright.edu> <1992Dec7.222607.3388@newstand.syr.edu>
- Organization: Concurrent Computer Corp.,Information Services
- Lines: 51
-
- In article <1992Dec7.222607.3388@newstand.syr.edu> amichiel@rodan.acs.syr.edu (Allen J Michielsen) writes:
- >In article <> choff@cs.wright.edu (Carl C. Hoff) writes:
- >
- >I am in the process of acquiring a retired Rainbow for a friend. I see the
- >manual and previous posters discuss a couple things. First a Z-80 and a 8088/6
- >processor.
-
- The Z80/8088 dual processor configuration is standard in ALL Rainbows.
-
- > Second, if you have the DEC DOS 2.11, with either a floppy or floppy/HD,
- >can many/most/some software from the IBM DOS world be used on it. I understand
- >that the video adapter is different, but if the software uses bios calls, it
- >should work if the DOS emulation is at all well done.
-
- Well, the disk format is different and the system bios's were different.
- If you use standard MSDOS INT calls you should be ok.
-
- > I also have been told that the floppy drives are 180K density to the DEC DOS
- >2.11. I thought the floppies were double sided, is this a limitation of the
- >software or IBM compatability.
- >
-
- The drives are Single Sided 80 track 10 sector (400k per drive).
-
- These can be written by AT's with high density drives with some public
- domain software.
-
- > If there is the DEC DOS 2.11 version available, usually for free, and the
- >system isn't compatible, why would anybody buy a dos 3.1 or code blue. Do
- >both of these require the factory 8088/6 option ?
-
- These make it much more IBM compatible.
-
- >is the controller and needed stuff available, cheap, can some/many/all of the
- >currently available st-412 drives be used with the system (albeit with limited
- >capacity).
-
- You can use any ST506 drive. The controller, however is the harder thing to
- find.
-
- Bill
-
- (not a real Rainbow guy - I used to work for DEC when they came out
- and I am a Robin VT180 owner).
-
-
- --
- --------------------------------------------------------------------------------
- Bill Pechter, N2RDI | The postman always pings twice.
- Concurrent Computer Corp. | pechter@ocpt.ccur.com
- 2 Crescent Place, Oceanport, NJ 07757 - Tel:908-870-4780
-