Hi Richard, The simplest way to differentiate the C128D and C128DCR is by the casing. The DCR has a metal one, the D a plastic case with a handle. Inside, the D has basically the C128 flat case board and a C1571 control board. Usually there is a fan. A couple connectors are different, but essentially its a case of the individual units installed in one case. Inside, the DCR has only one circuit board having the parts to be the C128 and C1571. The ROMs are different in that they have been "combined" and as your work has detailed, the Drive controller chips are new. If you ever got the opportunity to see and compare the two machines you'd agree that the DCR has definitely earned its name as "Cost Reduced" - well from a parts count point of view. Commodore seemed to be good at this (there's a Vic20 CR, the C64C was essentially CR, and the C128DCR board is rumoured to have also been used on the flat cased C128 but in a depopulated state). Hope this helps, Nick > -----Original Message----- > From: William Levak [SMTP:wlevak@cyberspace.org] > Sent: Tuesday, 25 January 2000 12:13 > To: cbm-hackers@dot.tcm.hut.fi > Subject: Re: C128D Floppy Drive Controller > > On Mon, 24 Jan 2000, Richard Atkinson wrote: > > > By the way, please refer to the machine as a 'C128DCR' as I always > > confused your messages with ones about the plastic C128D - ie. a regular > > C128 and 1571 in one case. > > The model number on the case is C128D. It's the only one I have. All the > information I have (what little there is) matches this machine. If there > is a different version, I have no information on it. > > Would you care to elaborate on this? > > > - > This message was sent through the cbm-hackers mailing list. > To unsubscribe: echo unsubscribe | mail > cbm-hackers-request@dot.tcm.hut.fi. ---------------------------------------------------------------------------------------------- PLEASE TAKE NOTE: The contents of this email (including any attachments) may be privileged and confidential. Any unauthorised use of the contents is expressly prohibited. If you have received this email in error, please advise us immediately (you can contact us by telephone on +61 8 9441 2311 by reverse charge) and then permanently delete this email together with any attachments. We appreciate your cooperation. Whilst Orbital endeavours to take reasonable care to ensure that this email and any attachments are free from viruses or other defects, Orbital does not represent or warrant that such are free from computer viruses or other defects. (C) 2000: Orbital Engine Company (Australia) Pty Ltd and its affiliates - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tcm.hut.fi.
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