[net.micro.cpm] Morrow MD2

notes@pur-ee.UUCP (11/30/83)

#N:iuvax:5100001:000:410
iuvax!lwm    Nov 29 02:15:00 1983


Does anyone out there have MODEM7 or equivalent already configured for
a Morrow Micro Decision 2?  I would like to get something on single-
sided diskette all ready to go.  Naturally I am willing to supply a
diskette and sufficient money to cover postage and bother.  I would be
eternally (well, for a long time anyway) grateful.

					Larry Meehan
					pur-ee!iuvax!lwm (uucp)
					lwm@indiana      (csnet)

Paul.Birkel@cmu-cs-a.ARPA (02/16/86)

I purchased a Morrow MD2 (used) last year for my father, and just now
purchased a Kaypro II (used) for my wife. Thanks to MFDISK and UNIFORM
I can exchange disks between the two. Given the limitations imposed
by the Kaypro II drives (191K each) I'm planning to try the Micro-Cornucopia
PRO-8 ROM with a pair of Mitsubishi disks (see article in M-C Dec. '85).
Seems very straightforward.

I'd like to do the same with the MD2; at least to get DSDD. That should just
mean a new ROM if I stick to two drives; else some decoder logic changes.
The M-C folks I talked to last week had never heard of such a thing. Of course
the MD3 does just that.

Question:

	Anyone done any sort of upgrade to a MD2?

	Anyone have a Schematic for the MD2?

	Anyone be willing to copy their MD3 ROM and determine any wiring
		diferences with the MD2 (i.e. have a MD3 schematic?)?

	Anyone have any help, at all, to offer? Pointers?

Thank you.
As I am just getting added to the mailing list, please direct any responses
directly to me:
		BIRKEL@A.CS.CMU.EDU (or, old style, @CMU-CS-A)

JCrow@his-phoenix-multics.arpa (Jerry Crow) (02/28/86)

        I'd  like  to do the same with the MD2; at least to get DSDD.  That
        should  just  mean  a  new  ROM if I stick to two drives; else some
        decoder  logic  changes.   The  M-C folks I talked to last week had
        never heard of such a thing.  Of course the MD3 does just that.

        Question:

             Anyone done any sort of upgrade to a MD2?

We have not upgraded MD2s per se, but we have added additional drives to an
MD3  to  bring the configuration up to a total of four drives (2 DS, 2 SS).
This  required  only  that several locations in the BIOS be patched; it did
not  require  a  ROM  change.   Note,  however,  that  the MD3 ROM has a DS
personality which is designed to permit the reading/writing of SS diskettes
in  the  DS  drives.  The process is "automatic"; i.e., the ROM responds to
the  presence  of  SS  diskettes  without user intervention.  I do not know
whether  a ROM change would be required to implement what you desire, but I
suspect not.  Our MD3s are running BIOS 3.1; the MD2s 2.3.

             Anyone have a Schematic for the MD2?

             Anyone  be  willing  to  copy  their MD3 ROM and determine any
             wiring diferences with the MD2 (i.e.  have a MD3 schematic?)?

I   believe  that  the  Morrow  Owners  Review  (MOG)  offers  a  technical
information  manual  on  the Morrow CP/M machines.  MOG is at P O Box 5437,
Berkeley  CA,  94705.   MOG  publishes a user oriented magazine of the same
name which is a good source of info about the Morrows.