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From: lphillips@lpami.wimsey.bc.ca (Larry Phillips)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Why no enhancer for the 500 right away.
Message-ID: <1474@lpami.wimsey.bc.ca>
Date: 30 Apr 90 22:29:36 GMT
Lines: 29
Return-Path: <lpami!lphillips>
To: van-bc!rnews

In <1748@corpane.UUCP>, sparks@corpane.UUCP (John Sparks) writes:
>S36666WB@ETSUACAD.BITNET (Brian Wright) writes:
>>I will agree that the 500 comes standard with 512k of ram and then add the
>>extra 512k to make 1 meg.  It isn't, however, that hard to add a fatter
>>agnus to the 500 for those with 1 meg.  I know of several people who have
>>already done it.  I still don't know why the Hold up.  Perhaps a trace
>>cut and/or a jumper for the 512k ROM?
>
>correct me if I am wrong, but I think that the extra 512K expansion board
>on a 500 is not considered chip mem but fast mem. Even with the 1 meg
>Agnus chip you would only have 512K of actual chip ram and 512K of fast ram.
>
>You would have to do some modifications (either some trace cutting or adding
>in the other 512K on the mother board) in order to get the 1 Meg of chip ram
>on a 500.

The 512K expansion becomes CHIP mem when you change the Agnus jumper to tell it
to be CHIP mem.

-larry

--
NeXT. The hardware makes it a PC. The software makes it a workstation.
      The units shipped makes it a mainframe.  -=stolen from Hazy=-
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|   //   Larry Phillips                                                 |
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