Amiga 1200 REV does it matter

XsamX1987 · 13 February 2017, 23:43

SO ive only had my 1200 since early oct last year and I'm just wondering does it matter what revision your board is, does it make any difference

mine is commodore Amiga Rev 2b but is a 1a or 1b better

or even are there any disadvantages of commodore over Escom ?

idrougge · 13 February 2017, 23:47

No.

demolition · 14 February 2017, 10:22

Some ESCOM boards are modified to work with PC floppy drives which is not good since many trackloaders will not work. It can be reverted though:
http://www.softpres.org/article:hard..._fdd_connector
Not all ESCOM boards will contain this mod though.

The later boards using an HP Lisa is supposedly better with high custom resolutions (HighGfx, Xtreme etc) as it can better handle the high clock rates without creating artifacts.

Besides these issues, there are no significant differences between the various revisions.

Toryglen-boy · 14 February 2017, 12:03

Quote:

Originally Posted by idrougge

No.

Yes. Yes it does matter, but ... it all depends on what you want to run on it. 2B was the last revision, and is notorious for timing issues with certain accelerators, older turbo cards, like the old Blizzards etc. are buffered, and are more stable as a result, although they do take quite a performance hit for it, i have a 2B in one of my Amiga's with an EC1221 it was heads of tails, as to wether it wanted to work or not, with the 1233n, its never borked once.

So, does it matter? for every day use? loading games from disk? no, not at all. Although if you're gonna expand the Amiga, or chuck an accelerator in there, then yes, it *could* matter

demolition · 14 February 2017, 12:08

Quote:

Originally Posted by Toryglen-boy

Yes. Yes it does matter, but ... it all depends on what you want to run on it. 2B was the last revision, and is notorious for timing issues with certain accelerators

Timing issues can happen on any revision and is not more prone to happen on 2B.

Toryglen-boy · 14 February 2017, 12:15

Quote:

Originally Posted by demolition

Timing issues can happen on any revision and is not more prone to happen on 2B.

yeah, yeah, whatever.

here is some info on board revisions, and timing fixes. The author of the page seems to take a very different view from you though.

Sauce

dirkies · 14 February 2017, 13:56

I wonder if rev 1D4 was the most "popular"/most produced mainboard for the A1200 ?

demolition · 14 February 2017, 18:06

Quote:

Originally Posted by Toryglen-boy

yeah, yeah, whatever.

here is some info on board revisions, and timing fixes. The author of the page seems to take a very different view from you though.

I don't really see that he claims that 2D boards are generally worse in regards to timing problems, but mainly that he only has anecdotal evidence from his 1 sample.

Kin Hell · 15 February 2017, 13:52

Quote:

Originally Posted by dirkies

I wonder if rev 1D4 was the most "popular"/most produced mainboard for the A1200 ?

Apparently so on these forums.

http://eab.abime.net/showthread.php?t=39137

@ Demolition

Quote:

"anecdotal"

Great word usage.

NovaCoder · 17 February 2017, 07:10

From what I've read the revision number printed on the board is pretty much meaningless...you could have anything!

13 February 2017, 23:43	#1
XsamX1987 Registered User Join Date: Oct 2016 Location: Oxfordshire Posts: 212	Amiga 1200 REV does it matter SO ive only had my 1200 since early oct last year and I'm just wondering does it matter what revision your board is, does it make any difference mine is commodore Amiga Rev 2b but is a 1a or 1b better or even are there any disadvantages of commodore over Escom ?

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13 February 2017, 23:47	#2
idrougge Registered User Join Date: Sep 2007 Location: Stockholm Posts: 4,332	No.

14 February 2017, 10:22	#3
demolition Unregistered User Join Date: Sep 2012 Location: Copenhagen / DK Age: 43 Posts: 4,190	Some ESCOM boards are modified to work with PC floppy drives which is not good since many trackloaders will not work. It can be reverted though: http://www.softpres.org/article:hard..._fdd_connector Not all ESCOM boards will contain this mod though. The later boards using an HP Lisa is supposedly better with high custom resolutions (HighGfx, Xtreme etc) as it can better handle the high clock rates without creating artifacts. Besides these issues, there are no significant differences between the various revisions.

14 February 2017, 13:56	#7
dirkies Zone Friend Join Date: Aug 2002 Location: Belgium Age: 51 Posts: 1,296	I wonder if rev 1D4 was the most "popular"/most produced mainboard for the A1200 ?

17 February 2017, 07:10	#10
NovaCoder Registered User Join Date: Sep 2007 Location: Melbourne/Australia Posts: 4,400	From what I've read the revision number printed on the board is pretty much meaningless...you could have anything!

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