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

[keropi]

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$ :lol:

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.... :-D



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!!  :lol:  :lol:  :lol:

[keropi]

and here is the benchmark results of Norton SysInfo !
:lol:  :lol:  :lol:

 


I am not sure it can run DOOM ok... I will try it...

[keropi]

tested DOOM, it is unplayable... great improvement from 25mhz, but it must run at ~12fps...

[keropi]

yeah, the 486slc are really some kind of super 386sx, it has nothing to do with 486 really... it is pin-compatible with the SX and has the same size too. an i486 is 4-5 times bigger too...

[keropi]

ofcourse I have, a CirusLogic 5420/1MB and an ESS soundcard with wavetable upgrade...

[keropi]

Plaz wrote:
I always wondered if that could be done. I even saved a couple of those to try myself, but I never got a board to try it in.

So did you get cache driver loaded to increase the speed even more?

Plaz

yeah, it just works by plugging it, but there is a small prog that you run to enable the cache to get more speed... also on the gg486 I needed to edit the 486slc2 reisters to enable also pipelining... all done easy with the program included on the driver-disk ...

[keropi]

no sorry, I just saw this thread again, the link is dead... I will try it back home, this evening, provided I have a working download link again

plaz: I will also give you the part number this evening...

[keropi]

back in the time, u could play a game like DOOM even if it was choppy... there was no comparison then, now we are all spoiled from 60+ fps...

[keropi]

QEMM ? I don't think I will ever use it, ems can cause probs sometimes, not to mention some games don't like it... I will test it though to see if it really does something...
I already use the FAST option and 0ws...
I had bad luck with faster vga cards, like tseng ones or cirruls logic 5422 on my A4000, there seems to be some timing/incompatibillity error that crash some games... disabling FAST option does not help either...

[keropi]

grab sysinfo, the one I used for my setup too!

http://rapidshare.com/files/32515676/sysinfo.zip.html

what kind of cpu upgrade u got? post pics!!!!

[keropi]

yep! lol
now all you need is a monitor-master (if u don't have one already) they are VERY handy!
I cannot seem to find a 5428 isa card

[keropi]

a nice amiga/pc combo, like mine but on a 4000 with csppc...  :lol:

[keropi]

I currenlty have mine on the RBM 7xZorro busboard... it works fine... BUT the GG must be in one of the upper 4 slots... the bottom 3 oned, don't have dma..

A2386 with 486? what upgrade? 486slc too?

[keropi]

since the gg486 is built upon the 386sx design, the max ram it can use is 16MB... that is a cpu limit, not the gg...
either way why would u need more? the stuff u can run OK with it,  work fine with only 4MB too! lol

[keropi]

a browser? what browser? lol
I prefer to use my regged copy of iBrowse in the goldengate amiga...