21 January 2007, 20:06 | #1 |
Motorollin
Join Date: Nov 2006
Location: Huddersfield UK
Age: 43
Posts: 251
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Is this 2mb or 1mb? (A500+ upgrade)
Hiya is this a 4mb A500+ upgrade?
Cheers Mike |
21 January 2007, 20:24 | #2 |
Thalion Webshrine
Join Date: Jan 2004
Location: Oxford
Posts: 14,460
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No such thing.
There is only a 1Mbyte A500+ trapdoor expansion (bringing the total to 2Mbyte Chip RAM) |
21 January 2007, 20:30 | #3 |
Motorollin
Join Date: Nov 2006
Location: Huddersfield UK
Age: 43
Posts: 251
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Thought so seen it on ebay and it was advertised as 4mb lol
just won this http://cgi.ebay.co.uk/ws/eBayISAPI.d...4924&rd=1&rd=1 Doesnt look like 2mb to me possibly 1mb ill have to see what sims are on it when it arrives what size do you lot think it is? Cheers Last edited by Mike UK; 21 January 2007 at 20:43. |
21 January 2007, 20:47 | #4 |
Thalion Webshrine
Join Date: Jan 2004
Location: Oxford
Posts: 14,460
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There is NO SUCH THING!
There are really only 512Kbyte (A500) and 1Mbyte (A500+) trap door expansions. To be any larger they would have to clip to the CPU [Edit:] Or the Gary chip Last edited by alexh; 21 January 2007 at 21:19. |
21 January 2007, 20:51 | #5 |
.
Join Date: Oct 2004
Location: Ioannina/Greece
Posts: 5,040
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so, those are 256kb simms of the auction????
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21 January 2007, 20:51 | #6 |
Motorollin
Join Date: Nov 2006
Location: Huddersfield UK
Age: 43
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I know theres a hardware limit.
Although 32 pin sims did come in different capacitys if memory serves me correct. its been a long time since i dealt with them. |
21 January 2007, 20:55 | #7 |
Registered User
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Location: Amigaville
Age: 46
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That'll probably be half or a full meg the one you've bought.
Power computing did one's that went upto 4m on the 500/+ although there was a daughter board supplied iirc for Gary. Out of interest have you checked the onboard battery on the 500+ (you'll need to take it apart as it's located on the actual motherboard) They are well over due to be replaced (better removed completely imo) (1992 - service life of 6 years) and you don't want it leaking Just something to bear in mind if you have a 500+. |
21 January 2007, 20:58 | #8 |
Motorollin
Join Date: Nov 2006
Location: Huddersfield UK
Age: 43
Posts: 251
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Good advice yeah i took the battery out within an hour of owning it luckily it hadnt leaked got one to solder on when i got some time free
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21 January 2007, 21:00 | #9 |
Thalion Webshrine
Join Date: Jan 2004
Location: Oxford
Posts: 14,460
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I've discovered that there are some larger A500 Trapdoor RAM expansions but all of course have to clip to the Gary. Elbox also does one.
@Keropi There were lots of things that shipped with 256kbyte 30-pin SIMMs (never upgraded an Atari STe have you!) including Marpet's A600 trapdoor expansion. @Paul_S I'd like to get a look at the PowerC thing with a clip to the Gary. Unfortunately there are no good pics of it on the net. Last edited by alexh; 21 January 2007 at 21:20. |
21 January 2007, 21:00 | #10 |
.
Join Date: Oct 2004
Location: Ioannina/Greece
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here it is, Marpet Developments: MP500B
those must be 256kb 30pin simms.... |
21 January 2007, 21:05 | #11 |
Motorollin
Join Date: Nov 2006
Location: Huddersfield UK
Age: 43
Posts: 251
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You found that one quick! cool hopefully its still got the same simms on board
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21 January 2007, 21:17 | #12 |
Thalion Webshrine
Join Date: Jan 2004
Location: Oxford
Posts: 14,460
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@Paul_S
You are right, there seems to be a lot more of these things that I first thought and they mainly clip to the Gary as you say. |
21 January 2007, 21:56 | #13 |
Ya' like it Retr0?
Join Date: Jul 2005
Location: United Kingdom
Age: 49
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I wonder if it is possible to convert one of these to connect to the A600 and Gayle chip ?......
i wonder i wonder i wonder....... |
21 January 2007, 22:41 | #14 |
Registered User
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Location: Amigaville
Age: 46
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It makes me wonder if you can fit anymore in that A600 as it is Zetro
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21 January 2007, 22:52 | #15 | |
Crazy Collector
Join Date: Aug 2006
Location: Munich/Bavaria + Saxony + Thailand
Age: 53
Posts: 151
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Quote:
Gayle and the Fat Gary from A4000 are containing the IDE controller btw. Here ist the Gary documentation from Dave Haynie's archive: http://www.thule.no/haynie/systems/a.../docs/gary.txt Somewhere i got the Gayle documentation too ... btw ... every trapdoor memory expansion with more than 1MB must connect to the Gary socket (but never to the CPU) to use the full available address space. But u can use only about 1.8MB (otherwise u would trash the chipset registers! ) Ciao, Rick ... |
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