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Author Topic: Amiga 500 Rev 5. and ECS chip set...??  (Read 22451 times)

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Offline waltermixxxTopic starter

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Amiga 500 Rev 5. and ECS chip set...??
« on: December 20, 2009, 02:29:27 AM »
I have an Amiga 500 with the OCS and was wondering what chips consist of the ecs upgrade... I know there is a super Denise and that is one of them,
but what are other chips I would need to be replaced to upgrade my Amiga 500 to an ECS Amiga 500...(also kickstart Rom 3.1 but what else?)

Are Kits available?

I'm already getting the ROM 3.1 and workbench 3.1...
what other chips would I need and does anyone know where I can get them?

:) cheers and thanks...
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Offline omnicron10

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Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #1 on: December 20, 2009, 02:33:16 AM »
1 Meg Agnus like the 8372A

You would also have to have 1 meg chip activated via hardware mods on the MB.

http://theweeks.org/toms-stuff/files/TDTTS_a500_r5_ag-hack_fix.txt
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Offline LoadWB

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Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #2 on: December 20, 2009, 02:33:41 AM »
There is a little "hack" to get the 1MB Agnus installed (cut a trace near Agnus socket,) and a wire jumper to get the larger ROMs working.  As well, a Super Denise is compatible.  I did all of these.  As I recall, the information for doing each (with the exception of the Super Denise, which some will argue is unecessary) is on AmiNet.

Happy Hacking.
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Offline dreamcast270mhz

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Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #3 on: December 20, 2009, 02:34:32 AM »
Okay here are the chips you need :

Replace Denise w/ super denise
Replace Agnus w/ Fat/Fatter Agnus

You don't need a "gary" or "buster" as there is no Zorro 2 bus on 500s. Paula was never upgraded so no need to replace.

On Ebay they have the chips needed.
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Offline waltermixxxTopic starter

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Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #4 on: December 20, 2009, 03:49:49 AM »
I see an auction for a bunch of chips including the fatter agnus,
but no mention of super denise... I did email him to find out... :)

:) thanks for the info... :)
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Offline ElPolloDiabl

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Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #5 on: December 20, 2009, 06:01:52 AM »
A super Denise make 1 instruction go faster and gives you some new screen modes. Nothing really useful.
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Offline trip6

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Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #6 on: December 20, 2009, 06:26:59 AM »
Or get a rev6A mainboard and the appropriate chips and no hacks necessary...
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Offline zipper

Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #7 on: December 20, 2009, 07:56:45 AM »
Quote from: trip6;534538
Or get a rev6A mainboard and the appropriate chips and no hacks necessary...


Same hacks but physically different - instead of cutting a trace (rev5) you need to alter a 3pin jumper pad making a cut and connect job there (rev6); a little less opportinity of doing damage. The other jumper job is similar in rev5 and 6.
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Offline Piru

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Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #8 on: December 20, 2009, 09:53:17 AM »
Quote from: Fanscale;534537
A super Denise make 1 instruction go faster

Really? Which one?
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Offline Zac67

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Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #9 on: December 20, 2009, 11:37:05 AM »
Quote from: Piru;534550
Really? Which one?


Also doubting that one - Denise actually has nothing to do with either CPU or Copper instructions, it's more of a rather simple 'bitplanes-to-palette-index-to-digital-color' converter, mixing in the odd sprite here and there. Pretty much like a RAMDAC without the DAC. ;)

Plus:
ECS only upgraded Agnus & Denise. Gary & Buster didn't change (apart from being scaled up for A3k) and Paula never changed at all.
Even AGA upgraded only Agnus/Alice and Denise/Lisa (without pin compatibility).
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Offline tone007

Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #10 on: December 20, 2009, 01:12:36 PM »
Quote from: Fanscale;534537
A super Denise make 1 instruction go faster and gives you some new screen modes. Nothing really useful.


Sure, new screen modes aren't useful at all.

Either way, Super Denise is required if you want ECS.
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Offline Zac67

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Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #11 on: December 20, 2009, 01:39:59 PM »
Quote
Either way, Super Denise is required if you want ECS.

Nope. ECS Agnus alone (2 MB chip) runs fine w/o problems.
For flexible scan rate modes and/or SuperHires you'd need Hires Denise, of course.
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Offline LoadWB

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Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #12 on: December 20, 2009, 05:02:24 PM »
As far as new screen modes, doesn't Super Denise also provide EHB?  I think that's why I upgraded, EHB for some game (Death Mask?  Don't really remember now; it's been about 14 years.)
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Offline tone007

Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #13 on: December 20, 2009, 06:09:54 PM »
Quote from: Zac67;534568
Nope. ECS Agnus alone (2 MB chip) runs fine w/o problems.
For flexible scan rate modes and/or SuperHires you'd need Hires Denise, of course.


ECS stands for Enhanced Chipset or something yes?  And "ECS" machines from Commodore came with a Super Denise, correct? Now, if you don't want compatibility with the couple of ECS games that use the new graphics chip out there, sure, stick your 2MB Agnus in. That's not ECS, though.  You need a Super Denise or you've got a hybrid.
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Offline Matt_H

Re: Amiga 500 Rev 5. and ECS chip set...??
« Reply #14 on: December 20, 2009, 07:25:52 PM »
Quote from: LoadWB;534590
As far as new screen modes, doesn't Super Denise also provide EHB?  I think that's why I upgraded, EHB for some game (Death Mask?  Don't really remember now; it's been about 14 years.)


Only the oldest of the oldest of the oldest Denises in the first A1000s don't have EHB. Every other Amiga should have it.
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