Re: info cpm board for cbm 8032

Hi,

the problem of this board is it's software.
except for a small section of the software written in 6502 assembly 
language.
the rest is in commodore basic and extremely slow.

in 1982 I tried to attach a scsi hard disk, but when I saw the quality 
of the software I just gave up.

--
didier




Le 19/09/2011 00:43, hwarin@neuf.fr a écrit :
> Hi, all
>
> It had been a long time since I had a look at CBM hackers mail list.
>
> This is very good to see whole that activity - May be that some time, 
> I will have time to continue my small projets with your help.
>
> Tous vos emails en 1 clic avec l'application SFR Mail sur iPhone et 
> Android - En savoir plus 
> <http://www.sfr.fr/telephonie-mobile/services-options/services-smartphones/applications-sfr/sfr-mail/android?sfrintid=M_email_signature>.
>
>
> ========================================
>
> Message du : 16/09/2011 04:13
> De : "Mike Naberezny " <mike@naberezny.com>
> A : cbm-hackers@musoftware.de
> Copie à :
> Sujet : Re: info cpm board for cbm 8032
>
>
>
> Hi Ruud & Didier,
>
> On 8/10/11 12:42 PM, Ruud@Baltissen.org wrote:
> > Is it possible to say what belongs in the smaller empty socket? I
> > must be a ROM because there isn't one on the board But OTOH the
> > pinout is weird, certainly not like any (EP)ROM I know.
>
> Some mysteries of the CP/M board are now solved. Didier was correct, the
> empty socket is for an AM9511A math coprocessor.
>
> Recently an 8032 sold on eBay USA and the buyer found a Z-RAM board 
> inside.
> He found my page on the board with Google and contacted me. He had the 
> manual
> and sent me photocopies of it. He did not have the disk.
>
> The buyer said the seller also sold an 8050 drive, so I contacted that 
> buyer
> as well. He received a handful of disks with the drive. Luckily, the CP/M
> boot disk was one of them and he sent it to me.
>
> I've scanned the manual and made a disk image:
> http://mikenaberezny.com/hardware/pet-cbm/madison-computer-z-ram/
>
> This is an interesting board. It functions as a configurable 64K RAM 
> expander
> for the PET, similar in ways to the 8096 board. To run CP/M, the PET 
> loads
> CP/M into the expansion RAM and then switches on the Z80. The 
> expansion RAM
> is then only accessible to the Z80. The board adds a 6520 PIA to the PET
> memory map and a special terminal program communicates with the Z80 side
> through I/O lines.
>
> Regards,
> Mike
>
> -- 
> Mike Naberezny (mike@naberezny.com) http://6502.org
>
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>
>



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