11 July 2009, 14:14 | #2 |
Posts: n/a
|
Maybe this is what your looking for ?
http://amigaworld.net/modules/classi...onces&lid=2389 Cheers John |
11 July 2009, 19:25 | #3 |
Ya' like it Retr0?
Join Date: Jul 2005
Location: United Kingdom
Age: 49
Posts: 9,768
|
@Drac
the A501 is only a half meg 512KB memory expansion, where as the A501+ is a full meg expansion 1024KB theres some more info here Last edited by Zetr0; 12 July 2009 at 02:06. |
11 July 2009, 20:22 | #4 |
Posts: n/a
|
I am sorry. My bad
Please accept my apology. John |
11 July 2009, 21:49 | #5 |
Banned
Join Date: Nov 2006
Location: Germany
Posts: 122
|
He will do.
|
12 July 2009, 02:07 | #6 |
Ya' like it Retr0?
Join Date: Jul 2005
Location: United Kingdom
Age: 49
Posts: 9,768
|
|
12 July 2009, 05:01 | #7 |
Posts: n/a
|
That's good
I looked at the pcb on the pictures he linked to and it says 512kb ram expansion on middle left side end and ABOH says it's 512kb on the pcb and the cardboardbox That's why I thought it was the same Learning something new every day Is booth A501 and A501+ chipram or fastram expansions ? ...Keller also has a 1 meg expansion called A501plus but it looks different. Last edited by Drac; 12 July 2009 at 06:17. Reason: Added Keller info |
12 July 2009, 12:28 | #8 |
Registered User
Join Date: Jan 2005
Location: Umeå
Age: 43
Posts: 933
|
I guess that for the last revisions of the A501, they made a PCB which could be used for making both the A501 and A501+.
In the A501 incarnation, for the regular A500, it would only have had four ram chips (256kx4 ram chips) and the realtime clock part would have been populated with chips and battery. They are both chipmem expansions, but on many A500's, the Agnus chip will only address 512kB chipmem and because of that this added memory will treated as fast ram by the system, even if it is on the chipmem bus - often this is called slowfast, as it is as exactly as slow as chipmem from the cpu's point of view. I am after the Commodore A501+ specifically btw . |
12 July 2009, 17:29 | #9 |
Posts: n/a
|
When you get ahold of one please post some pictures, and I would love one for my collection if you more than 1 offer
The A501+ I have is the 512kb version so I would love the 1 mb version. John |
12 July 2009, 19:45 | #10 |
Ya' like it Retr0?
Join Date: Jul 2005
Location: United Kingdom
Age: 49
Posts: 9,768
|
@Drac
post up some hires pics of your A501+ I may be able to help upgrading it |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Wanted: Commodore 1084 Monitor | nixxj | MarketPlace | 5 | 19 June 2012 16:50 |
Wanted Commodore Amiga CD32 and Commodore CDTV | j_sntos | MarketPlace | 4 | 09 March 2012 14:18 |
Wanted: Commodore 128D keyboard | protek | MarketPlace | 0 | 12 March 2011 19:55 |
Wanted: Commodore 64 power supply | 8bitbubsy | MarketPlace | 0 | 10 May 2010 00:57 |
Wanted: Commodore 128 keyboard | Amiga1992 | MarketPlace | 1 | 18 December 2008 23:48 |
|
|