Telling OCS/ECS Agnus apart

appiah4 · 12 May 2015, 12:02

How can I tell whether my A500 has an OCS or ECS Agnus chip? Do I have to lift the cover?

voyager_1701e · 12 May 2015, 13:07

Pretty sure WhichAmiga will report the Agnus model...give that a try?

appiah4 · 12 May 2015, 14:25

Quote:

Originally Posted by voyager_1701e

Pretty sure WhichAmiga will report the Agnus model...give that a try?

What's the easiest way to get the contents of the LHA archive to an Amiga floppy (or an ADF file?)

I had SysInfo V3.22 on a Disk so I ran that and got STD AGNUS - 512K for DMA/Gfx, that's an OCS right?

mark_k · 12 May 2015, 15:40

If you have a copy of the 1.x Extras disk, run AmigaBASIC, click in the main window and type:
POKEW 14676444,0
and press return. Then type
POKEW 14676444,32
and press return.

If there was any change in the display either time, you have the ECS Agnus.

voxel · 12 May 2015, 16:54

you can boot wb and go to preferences/overscan, if the full overscan is 768*580 you have an pal OCS agnus (8371) / denise combo. ECS parts have a smaller full overscan.

appiah4 · 12 May 2015, 17:05

Quote:

Originally Posted by voxel

you can boot wb and go to preferences/overscan, if the full overscan is 768*580 you have an pal OCS agnus (8371) / denise combo. ECS parts have a smaller full overscan.

Workbench 1.3.2 would work for that?

Jope · 13 May 2015, 08:22

No, 2.x and up.

appiah4 · 13 May 2015, 13:45

Quote:

Originally Posted by Jope

No, 2.x and up.

I don't even have KS 2.x

Jope · 13 May 2015, 13:45

Just run sysinfo then. :-)

The 512k Agnus is OCS.

appiah4 · 13 May 2015, 13:48

SysInfo shows 512K STD AGNUS, I guess it's OCS, thanks

Jope · 13 May 2015, 13:59

It is OCS. :-)

appiah4 · 14 May 2015, 19:48

So the other A500 is an ECS?

Quote:

Std Elise though? What does this mean? Lol

Also green power and orange floppy led.. Can I determine revision?

grizzlyaddams · 14 May 2015, 21:23

In that image it looks like an OCS Denise with an ECS Agnus, but despite having an ECS Agnus the RAM is still configured as 512k Chip/512k Fast.

appiah4 · 15 May 2015, 08:25

Oh nice.. Is that why this Amiga benches as 1.08x a normal A500? What additional benefits would I get from upgrading to a Super Denise and/or 1MB chip memory? And I suppose this all means it's a Rev6?

Jope · 15 May 2015, 09:37

It is most likely a rev6 since you have the 1MB Agnus.

A super denise would enable VGA refresh rates and a bunch of other unusable display modes. Really, save your money. The A3000 is the only ECS machine where the better screen modes are worth using.

1MB chip (better make it switchable) is handy for those large protracker modules. :-)

The 1.08 might be because of the slow fast, but then again it might not. Sysinfo is not very accurate.

grizzlyaddams · 15 May 2015, 20:11

Super Denise won't do much good for anyone. It only provides screen modes with higher resolutions and less colors. It's not used for games at all. Maybe productivity.

Changing the 512k Chip Ram to 1mb Chip Ram is something you should definitely do as it provides higher compatibility with almost everything, especially games.

Your ECS Agnus (8372A/B) also gives you the ability to switch between NTSC and PAL, but even though I am in America, I hard converted my system to PAL since almost all software out there now is PAL and while some games work fine, most will have sound or graphics issues, and others won't boot at all.

12 May 2015, 12:02	#1
appiah4 Registered User Join Date: May 2015 Location: Somewhere in Time Posts: 492	Telling OCS/ECS Agnus apart How can I tell whether my A500 has an OCS or ECS Agnus chip? Do I have to lift the cover?

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12 May 2015, 13:07	#2
voyager_1701e Registered User Join Date: Feb 2014 Location: Maitland / AUSTRALIA Posts: 205	Pretty sure WhichAmiga will report the Agnus model...give that a try?

12 May 2015, 15:40	#4
mark_k Registered User Join Date: Aug 2004 Location: Posts: 3,347	If you have a copy of the 1.x Extras disk, run AmigaBASIC, click in the main window and type: POKEW 14676444,0 and press return. Then type POKEW 14676444,32 and press return. If there was any change in the display either time, you have the ECS Agnus.

12 May 2015, 16:54	#5
voxel Amiga Nuts! Join Date: Sep 2006 Location: Le Mayet d'Ecole, 03800, FRANCE Posts: 176	you can boot wb and go to preferences/overscan, if the full overscan is 768*580 you have an pal OCS agnus (8371) / denise combo. ECS parts have a smaller full overscan.

13 May 2015, 08:22	#7
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,884	No, 2.x and up.

13 May 2015, 13:45	#9
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,884	Just run sysinfo then. :-) The 512k Agnus is OCS.

13 May 2015, 13:48	#10
appiah4 Registered User Join Date: May 2015 Location: Somewhere in Time Posts: 492	SysInfo shows 512K STD AGNUS, I guess it's OCS, thanks

13 May 2015, 13:59	#11
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,884	It is OCS. :-)

14 May 2015, 21:23	#13
grizzlyaddams Registered User Join Date: Apr 2015 Location: NY Posts: 36	In that image it looks like an OCS Denise with an ECS Agnus, but despite having an ECS Agnus the RAM is still configured as 512k Chip/512k Fast.

15 May 2015, 08:25	#14
appiah4 Registered User Join Date: May 2015 Location: Somewhere in Time Posts: 492	Oh nice.. Is that why this Amiga benches as 1.08x a normal A500? What additional benefits would I get from upgrading to a Super Denise and/or 1MB chip memory? And I suppose this all means it's a Rev6?

15 May 2015, 09:37	#15
Jope - Join Date: Jul 2003 Location: Helsinki / Finland Age: 43 Posts: 9,884	It is most likely a rev6 since you have the 1MB Agnus. A super denise would enable VGA refresh rates and a bunch of other unusable display modes. Really, save your money. The A3000 is the only ECS machine where the better screen modes are worth using. 1MB chip (better make it switchable) is handy for those large protracker modules. :-) The 1.08 might be because of the slow fast, but then again it might not. Sysinfo is not very accurate.

15 May 2015, 20:11	#16
grizzlyaddams Registered User Join Date: Apr 2015 Location: NY Posts: 36	Super Denise won't do much good for anyone. It only provides screen modes with higher resolutions and less colors. It's not used for games at all. Maybe productivity. Changing the 512k Chip Ram to 1mb Chip Ram is something you should definitely do as it provides higher compatibility with almost everything, especially games. Your ECS Agnus (8372A/B) also gives you the ability to switch between NTSC and PAL, but even though I am in America, I hard converted my system to PAL since almost all software out there now is PAL and while some games work fine, most will have sound or graphics issues, and others won't boot at all.

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