Re: Card info needed

[louiss@gate.net (Louis Schulman)]

In <19961231092500.EAA06101@ladder01.news.aol.com>, mjmahon@aol.com (MJMahon) writes:
>I recently rescued a //e containing three cards I have not previously
>encountered.  I'd like to tap the expertise of the group to obtain
>enough information to make them useful, if possible.
>
>The first card is an aux slot card:  the Microsoft Premium SoftCard //e,
>a 12 MHz Z80 card. 

>Will this card run my existing CPM software on a //e?  Is there a special
>CPM system for this card which offers additional space/features/etc.?
>I guess it's too much to hope for that it might be compatible with a
>ZipChip...  ;-/

Of course, this is a Z-80 CP/M card as you suggest.  I don't think you are 
right about the 12 mHz.  I don't have the card in front of me, but a Z-80 is
2.5 mHz, a Z-80A is 4 mHz, a Z-80B is 6 mHz, and a Z-80H is 8mHz.
I think your card has the Z-80B.

The card offers no advantage, except it doesn't take up a slot and does perform
the 80 col. card functions.  It runs CP/M 2.2, but needs it own special boot
disk (ver. 2.26).  Since the chip is much faster than a stock Z-80, the system
is fast and an accelerated 6502 wouldn't help.  But you might have to take the
Zip chip out for the card to work properly.

>-michael
>
> mahon@cup.hp.com		"Obsolete power corrupts obsoletely!"  ;-]
> mjmahon@aol.com

Louis