AIM 65 question

From: Sipke de Wal <sipke_at_wxs.nl>
Date: Tue May 25 16:52:10 1999

CMOS versions of 6502's by various manufactors had
illegal/non-documented instructionset enhancements, The problem was that
different manufactors
divised different enhancements so the are not very compatible.

There must be docu's out there outlining the non-documented instructions
of various manufactors, Homecomputer magazines from the UK liked to run
such info, Unforunatly I cast out a lot of these magazines.

Sipke de Wal

Joe wrote:
>
> Dick,
>
> That's an interesting question! I wonder what the difference in the
> software is? I don't think I've ever heard of a CMOS AIM 65. The BASIC
> comes up as ver 1.1. I didn't see a version on the assembler. The ICs
> containing the assembler and BASIC don't have any special markings. They're
> PN is the same as the PN of the two standard ROMs except one digit is
> different.
>
> Joe
>
> At 08:31 AM 5/25/99 -0600, you wrote:
> >NOW . . . The interesting question is whether the firmware versions you have
> >support the ROCKWELL CMOS versions or only the NMOS parts. Rockwell made
> >the AIM 65 its evaluation system for their entry in the 6502 market, but
> >their CMOS version is the one whose instruction set I thought was the best
> >of all of them. If your AIM boards have the assembler and BASIC interpreter
> >for the CMOS version, that's something to hang onto since it's still current
> >as far as the compatible cores are concerned.
> >
> >Dick
> >
> >-----Original Message-----
> >From: Joe <rigdonj_at_intellistar.net>
> >To: Discussion re-collecting of classic computers
> ><classiccmp_at_u.washington.edu>
> >Date: Tuesday, May 25, 1999 4:15 AM
> >Subject: Re: AIM 65 question
> >
> >
> >>They are. Two are optional BASIC and the other is optional Assembler.
> >>
> >> Joe
> >>
> >>At 10:49 PM 5/24/99 -0700, you wrote:
> >>>These 24 pin chips sound to me like ROM's.
> >>>
> >>>William R. Buckley
> >>>
> >>>-----Original Message-----
> >>>From: Joe <rigdonj_at_intellistar.net>
> >>>To: Discussion re-collecting of classic computers
> >>><classiccmp_at_u.washington.edu>
> >>>Date: Monday, May 24, 1999 2:59 PM
> >>>Subject: AIM 65 question
> >>>
> >>>
> >>>>Hi,
> >>>>
> >>>> I picked up several AIM 65 computers. I've noticed that some of them
> >>>>have two 24 Pin ICs in the lower right corner and some have five. Anyone
> >>>>know what the difference is? Also some have only two of the 19 pin ICs
> >in
> >>>>the top right corner and other have eitht ICs there. What's the
> >difference
> >>>>there?
> >>>>
> >>>> Anyone know of a site where I can find out more about these and the
> >>>>commands to operate them?
> >>>>
> >>>> Joe
> >>>>
> >>>
> >>>
> >>
> >
> >
Received on Tue May 25 1999 - 16:52:10 BST

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