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- Path: news.globalxs.nl!news
- From: otterleo@globalxs.nl (NetMan)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Help: Can't get A500 to recognize 1MB Fat Agnus?
- Date: 14 Apr 96 14:20:32 +0100
- Organization: GlobalXS, the Netherlands
- Message-ID: <1324.6678T860T1604@globalxs.nl>
- References: <efrain-1004961924400001@ppp-52.ts-1.nyc.idt.net>
- NNTP-Posting-Host: ppp142.globalxs.nl
- X-Newsreader: THOR 2.22 (Amiga;TCP/IP)
-
- Efrain G. (efrain@soho.ios.com) 11-Apr-96 00:17:26
- >I have an A500 which I just added the ECS set to. Unfortunately, All the
- >other chips are recognized except for the Fat Agnus. My Amiga is of the
- >original kind. It needs the grounding wire for the 2.04 Rom.
-
- >Does anyone know what procedure I must go through to make the 500
- >recognize the extra 512k of chip ram? Thank you for your help.
- >--
-
-
- > Efrain G.
- > Efrain@soho.ios.com
-
- Here are the steps to get 1MB Chipmem on an A500, Rev5 :
-
- - Toggle JP2 (under-middle -> middle-above)
-
- - For PAL-Amiga's ONLY : pin 41 of Fat Agnus must be isolated
-
- - Cut the line between Gary pin 32 and pin 32 of the internal expansion
- (_EXRAM must be disconnected from expansion) connector (A501 expansion) : On
- the side of the expansion connector !!!
-
- for Rev6a :
-
- - Toggle JP2, as above.
-
- - For PAL Amiga's ONLY : JP4 must be opened
-
- - JP7A must be opened (_EXRAM must be disconnected from expansion)
-
-
- If you have an older revision A500 : send an email to me...
-
- Good Luck !
-
-
- ArlĪ Mooldijk
- Student electronics
- The Netherlands, Europe
-
- --
- WARNING : If you have no knowledge of electronics then ask a friend who does,
- the Amiga-chips are very sensitive to static discharges !!
- --
-
-