How to upgrade your GoldenGate486slc/25mhz to 486slc2/50mhz!

keropi · 25 April 2007, 17:38

I succesfully upgraded the 25mhz 486slc cpu of my Goldengate to a 486slc2 cpu that is 50mhz! without any soldering ofcourse!
first you need the Cyrix 386to486 piggy-bag upgrade cpu, that was intented for 386SX cpu's...

I bought this brand-new old stock still sealed from eBay for 25$

then you just install it on-top of the existing slc cpu...

... and you boot the GoldenGate486slc as normal.... but you notice something different on the cpu clock reading....

and it actually works! the gg486 is faster and u only have to run a small prog on autoexec.bat to enable internal cache and pipelining! yeah!!

Dizzy · 25 April 2007, 17:46

nice

killergorilla · 25 April 2007, 17:51

Quote:

Originally Posted by Dizzy

nice

You have no idea what he's talking about do ya

coze · 25 April 2007, 17:56

I have a 486slc2 waiting in the stash to be installed

this information will be useful

Dizzy · 25 April 2007, 18:18

Quote:

Originally Posted by killergorilla

You have no idea what he's talking about do ya

not much but it look nice

keropi · 25 April 2007, 18:57

and here is the benchmark results of Norton SysInfo !

wizard66 · 25 April 2007, 19:22

Cool

DDNI · 25 April 2007, 20:36

does it run AMIGA Quake?

musashi5150 · 25 April 2007, 20:47

I wonder where that cute 387 in the picture came from

[Waves 'hello']

keropi · 26 April 2007, 00:09

lol musashi, u donated it to me

I am still investigating though, because the fpu check on the slc2-driver-disk , after doing tests finds that this fpu is not compatible...
maybe the checks are hacky and cause probs with the gg486 either way...
u wanna check it? I have zoned the driver-disk , look inside the FASMATH folder !!!

edit: can you also run sysinfo from the dos utils I zoned and tell us what rating the original 25mhz cpu has? I forgot to run it, and I don't want to stress the fragile clip-on cpu (it also has another part that secures it, not show on the pic...)

musashi5150

alexh · 26 April 2007, 01:39

Shame it couldnt take a dx4 100

keropi · 26 April 2007, 07:41

yeah, unfortunatelly we are only limited to 386sx cpu upgrades....
BUT, there is a 486slc2 made by IBM that is the same size-pins as my cyrix one, and it is actually almost as fast as the DX2/66 ...!
but finding it is quite difficult...

HERE is some info on it, it is 33/66mhz...

Unknown_K · 26 April 2007, 19:15

Nobody ever made a 486 bridgeboard then?

keropi · 26 April 2007, 19:51

nope...

musashi5150 · 26 April 2007, 23:35

I have the benchmarks for you (looks like your machine toasts this one

):

CPU Speed: 14.5
Disk Speed: 9.9 (Dedicated IDE drive)
Overall: 12.9

The FAST switch for GG didn't make any difference at all.

I also tried the Cyrix tests and they "seemed" to run ok on my FPU here... so I don't know what to suggest for you

But they are pretty poorly coded and difficult to understand. They just seem to check for errors from your results against what they are expecting.

keropi · 27 April 2007, 07:43

what? really? the 50mhz upgrade scores 58.6 and the 25mhz one 14.5??? with the bench I zoned? wow, talking about HUGE improvement!!!
maybe those bad coded fpu tests don't like the 50mhz slc2 with the ITT-fpu combo... lol perhaps I find some real dos prog that works with fpu to test...

musashi5150 · 27 April 2007, 09:00

Quote:

Originally Posted by keropi

what? really? the 50mhz upgrade scores 58.6 and the 25mhz one 14.5??? with the bench I zoned? wow, talking about HUGE improvement!!!

Yes indeedy

I guess not only doubling the speed but also adding internal cache and pipelines makes a large difference. Your system rrrocks

Could you do another test with your pipelines/cache disabled... would be interesting.

keropi · 27 April 2007, 09:42

allright in 3 days, when I return from the Blind Guardian concert!!!!!!

Jakodemus · 22 June 2007, 14:05

My benchmark scores:
Overall Performance 22,7
Disk speed 9,2
CPU speed 31,9

Bridgeboard is Golden gate 486slc 25mhz with 16mb ram. No 387sx.

keropi · 22 June 2007, 14:58

yes, that is typican perfomance for the 25mhz version...
now search eBay to get an upgrade

the 387 is like the amiga 6888x , only for show off

25 April 2007, 17:38	#1
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	How to upgrade your GoldenGate486slc/25mhz to 486slc2/50mhz! I succesfully upgraded the 25mhz 486slc cpu of my Goldengate to a 486slc2 cpu that is 50mhz! without any soldering ofcourse! first you need the Cyrix 386to486 piggy-bag upgrade cpu, that was intented for 386SX cpu's... I bought this brand-new old stock still sealed from eBay for 25$ then you just install it on-top of the existing slc cpu... ... and you boot the GoldenGate486slc as normal.... but you notice something different on the cpu clock reading.... and it actually works! the gg486 is faster and u only have to run a small prog on autoexec.bat to enable internal cache and pipelining! yeah!!

26 April 2007, 00:09	#10
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	lol musashi, u donated it to me I am still investigating though, because the fpu check on the slc2-driver-disk , after doing tests finds that this fpu is not compatible... maybe the checks are hacky and cause probs with the gg486 either way... u wanna check it? I have zoned the driver-disk , look inside the FASMATH folder !!! edit: can you also run sysinfo from the dos utils I zoned and tell us what rating the original 25mhz cpu has? I forgot to run it, and I don't want to stress the fragile clip-on cpu (it also has another part that secures it, not show on the pic...) musashi5150 Last edited by keropi; 26 April 2007 at 00:21.

26 April 2007, 07:41	#12
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	yeah, unfortunatelly we are only limited to 386sx cpu upgrades.... BUT, there is a 486slc2 made by IBM that is the same size-pins as my cyrix one, and it is actually almost as fast as the DX2/66 ...! but finding it is quite difficult... HERE is some info on it, it is 33/66mhz... Last edited by keropi; 26 April 2007 at 08:00.

26 April 2007, 23:35	#15
musashi5150 move.w #$4489,$dff07e Join Date: Sep 2005 Location: Norfolk, UK Age: 42 Posts: 2,351	I have the benchmarks for you (looks like your machine toasts this one ): CPU Speed: 14.5 Disk Speed: 9.9 (Dedicated IDE drive) Overall: 12.9 The FAST switch for GG didn't make any difference at all. I also tried the Cyrix tests and they "seemed" to run ok on my FPU here... so I don't know what to suggest for you But they are pretty poorly coded and difficult to understand. They just seem to check for errors from your results against what they are expecting. Last edited by musashi5150; 26 April 2007 at 23:42.

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25 April 2007, 17:46	#2
Dizzy Pirate Join Date: Jan 2002 Location: Denmark Posts: 3,395	nice

25 April 2007, 17:56	#4
coze hastala vista winny vista Join Date: Feb 2006 Location: mt fuji Age: 46 Posts: 1,335	I have a 486slc2 waiting in the stash to be installed this information will be useful

25 April 2007, 18:57	#6
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	and here is the benchmark results of Norton SysInfo !

25 April 2007, 19:22	#7
wizard66 FPGA Replay inside A590 Join Date: Sep 2004 Location: Rotterdam/Netherlands Age: 57 Posts: 294	Cool

25 April 2007, 20:36	#8
DDNI Targ Explorer Join Date: Mar 2006 Location: Northern Ireland Posts: 5,432	does it run AMIGA Quake?

25 April 2007, 20:47	#9
musashi5150 move.w #$4489,$dff07e Join Date: Sep 2005 Location: Norfolk, UK Age: 42 Posts: 2,351	I wonder where that cute 387 in the picture came from [Waves 'hello']

26 April 2007, 01:39	#11
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,355	Shame it couldnt take a dx4 100

26 April 2007, 19:15	#13
Unknown_K Registered User Join Date: May 2002 Location: Ohio/USA Age: 55 Posts: 1,380	Nobody ever made a 486 bridgeboard then?

26 April 2007, 19:51	#14
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	nope...

27 April 2007, 07:43	#16
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	what? really? the 50mhz upgrade scores 58.6 and the 25mhz one 14.5??? with the bench I zoned? wow, talking about HUGE improvement!!! maybe those bad coded fpu tests don't like the 50mhz slc2 with the ITT-fpu combo... lol perhaps I find some real dos prog that works with fpu to test...

27 April 2007, 09:42	#18
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	allright in 3 days, when I return from the Blind Guardian concert!!!!!!

22 June 2007, 14:05	#19
Jakodemus Registered User Join Date: Aug 2006 Location: Finland Posts: 62	My benchmark scores: Overall Performance 22,7 Disk speed 9,2 CPU speed 31,9 Bridgeboard is Golden gate 486slc 25mhz with 16mb ram. No 387sx.

22 June 2007, 14:58	#20
keropi . Join Date: Oct 2004 Location: Ioannina/Greece Posts: 5,040	yes, that is typican perfomance for the 25mhz version... now search eBay to get an upgrade the 387 is like the amiga 6888x , only for show off

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