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Author Topic: A500 Upgrades  (Read 5395 times)

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Offline Jiffy

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Re: A500 Upgrades
« Reply #29 from previous page: April 06, 2013, 11:29:41 AM »
Quote from: GadgetUK;731402

I would add more RAM to those empty sockets youve got then you would have 1.5Mb chip ram, but it would require soldering many pins.  

Sorry, that is definitely not correct. You are not going to get more than 1 MB chip ram without upgrading to a 2 MB Agnus. And that is not simply finding a 2 MB Agnus an replacing the old 1 MB Agnus...
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Life sucks. Then you die. Then they throw mud in your face. Then you get eaten by worms. Be happy it happens in that order... My Amiga 1200
 

Offline GadgetUK

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Re: A500 Upgrades
« Reply #30 on: April 06, 2013, 03:08:57 PM »
Quote from: Jiffy;731456
Sorry, that is definitely not correct. You are not going to get more than 1 MB chip ram without upgrading to a 2 MB Agnus. And that is not simply finding a 2 MB Agnus an replacing the old 1 MB Agnus...

Yes, you are correct, I had forgotten he has a 1Mb Agnus. Still worth doing to have 1Mb on board and 512Kb of fast(slow) RAM.
 
In addition to the chips you should probably put some decoupling caps on the there - 0.33uF (I've got some if you do decide to do it, just pay for postage you can have the caps - I got a bulk lot of 50 and i've only used 2 so far.)
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Offline mongo

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Re: A500 Upgrades
« Reply #31 on: April 06, 2013, 04:43:20 PM »
Quote from: GadgetUK;731462
Yes, you are correct, I had forgotten he has a 1Mb Agnus. Still worth doing to have 1Mb on board and 512Kb of fast(slow) RAM.
 
In addition to the chips you should probably put some decoupling caps on the there - 0.33uF (I've got some if you do decide to do it, just pay for postage you can have the caps - I got a bulk lot of 50 and i've only used 2 so far.)


The extra 512K on the board is mapped into the same address space as the 512K on the trapdoor expansion. You can not use both without doing a hack that allows you to map them to different address spaces.
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Offline orange

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Re: A500 Upgrades
« Reply #32 on: April 06, 2013, 07:23:01 PM »
think this will be fantastic upgrade for A500:
http://eab.abime.net/showthread.php?t=68459
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Offline LaughyTopic starter

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Re: A500 Upgrades
« Reply #33 on: April 07, 2013, 07:26:11 PM »
Hi,

Thanks to everyone for their suggestions! I'm more confused now than before, mainly due to being at least 20 years behind you all in electronic experience!

I thought I was doing pretty good, when I put the trapdoor expansion in in 1990! Haven't done anything with computers since...

I will look up as many of your suggestions as my brain can handle, and definitely do some of them. I'd better start with the ones that don't require any soldering on the motherboard. I'd better keep it simple, I quite like using the floppies still, for the proper retro feel. But having a different drive with tons of games on it does appeal!

I'm just happy to be using my beloved Amiga again!

Thanks!
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