Cyberstorm MKI upgrading the 68060 from 50mhz to 75mhz?

[slaapliedje]

So I thought what the hell, I found this on eBay; http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemVersion&item=230404340431&view=all&tid=886057929013

It was 30 bucks, if it's a fake?  not too big of a deal.  At 30 bucks it probably is.

So, the question is though, can I swap out the 68060RC50 out of my Cyberstorm MK1 and the crystal and that's all I need?

I've seen several over clocking guides, but they've all been for the MKII or MKIII, never the MKI.

This claims in the main description that it's a MC68EC060RC75, so I'd need to find a 75mhz crystal, correct?  or if I wanted to over clock it, maybe get a 100mhz one?

As I said, I haven't found any information on the MKI, so maybe I'm way off base there.  I figured it was only 30 bucks, so why not?

slaapliedje

[slaapliedje]

This post says he managed to get an MK2 to work with one.

http://www.amiga.org/forums/showthread.php?t=24713

slaapliedje

[slaapliedje]

Guess I'll find out!

slaapliedje

[slaapliedje]

Well, ignoring this particular Chip, is it possible to overclock, or get a faster clocked CPU for it, and if so, is that all that is needed, the chip and the oscillator?  (or if just overclocking, the oscillator is all that's needed?)

I think I have one of the earlier 68060RC50s, I'll post the cpu info tomorrow, but if I recall it was one of the first revisions.  It does have a heatsink and a fan on it.

slaapliedje

[slaapliedje]

I also recall that some of the early 68EC060 chips were full 68060s. They were probably rejects of the full mask. The later 68EC060 processors received their own mask (which was shrunk so should allow rev 6 clock speeds) which are highly unlikely to have the missing FPU and MMU. IMO, save yourself some trouble and stay with a full 68060 even if it's a little slower. Nova Coder's 3D ports need the FPU if that is the reason for wanting to overclock now.

Well, that actually is why I initially looked into it, but eventually I want to start programming on it, so less compile time the better.  Quake 1 is almost playable at 50mhz.

It depends on the accelerator and the amount of overclocking. The oscillator can affect the timing of the CPU, memory, Amiga chipset speed and I/O bus, and various chips on the accelerator (some of which have a rated maximum speed and temperature which increases). Some accelerators have multiple oscillators or locations for them to be able to independently clock the different pieces. Some accelerators use frequency dividers for the different pieces and don't tolerate changing the oscillator much at all. You can get some overclocking tips from this web site:

http://members.iinet.net.au/~davem2/amiga.html

I had found that site before, but as I said in the original post, no info on overclocking the MK1.  Not sure if I want to be the guinea pig...

Most of the early revision 68060s will clock to 60MHz which is worth trying. I haven't heard of an overclocked CSMK1 but there is a good chance that the accelerator and CPU will tolerate it although SCSI modules or SIMMs may not.

I don't have the SCSI module, and at least half the SIMMS are brand new.  I'd rather not overclock it, but get an actual CPU that runs at that, and swap the crystal out.  But you're right, there could be other components that are set with specific timings.

slaapliedje

Edit: my revision on my chip is Revision 1
System: 68060MC 0-1f43G,2f43G-0g65V Revision 1
Register:
 CACR=$A08008000
  PCR=$04300101
BUSCR=$00000000

[slaapliedje]

I do have the Radeon, I was trying out the AGA version of Quake 1, which suggested at least a 66mhz 060.  Quake2, I think suggested a 75mhz one.

I wish I could get glquake working on it, but from what I understand only the Voodoo is supported?

Is the FPGArcade out yet?  I was kind of looking into getting one, but last I looked, it was still in development.

slaapliedje

[slaapliedje]

Ha ha!  Yeah, I was kind of thinking along those lines.  EC meant Embedded Controller, and more than likely are full 68060s, that were just sold to the embedded makers for cheaper.  It would have taken Motorola more money to create several different chips, and at that point in the game, the 68k was almost EOL.  

It is the same thing with Intel (and I'm sure AMD).  They have a test process, and if it doesn't pass the test 100%, they sell the chips at a lower clock.  At least I know that's what they used to do during the Pentium days.  I had overclocked the Pentium 75 to 100mhz, never had any issues.  Well at least that I could tell with how crash prone Windows 95 was...

So the question is though, would I need to just swap out my crystal with a 75mhz one?  

Guess I'll look and see.

slaapliedje

[slaapliedje]

Just for fun, I tried looking up how much the 68060s were going for new...

Mouser Electronics have 240 in stock.  You have to order a minimum of 7 of them... but they're 850 dollars each!  http://www.mouser.com/ProductDetail/Freescale-Semiconductor/MC68060RC60/?qs=sGAEpiMZZMtLck3p7ZBovcYeUrhJZ7ee

That's insane!

slaapliedje

[slaapliedje]

All 1 of them you bought?

Early EC060 chips were full 060 chips that may have failed the MMU or FPU tests. Later EC chips were manufactured with a different mask that doesn't have the FPU. All 75 MHz chips were LC or EC chips with no FPU.

Worse scenario, I paid 30 bucks for a case badge that I can put on my computer at work.  

slaapliedje

[slaapliedje]

If you're 060 really is revision 1 (have I got this right?) then I wouldn't expect anything above 66 MHz. I'd try 60MHz first and check it's stable (and I mean the card as well because from what I gather no one knows how over-clockable the CS MkI is. Regarding the CPU, I had a revision 5 060 which ran at 66MHz in an Apollo 1260 but not at 75MHz. Apollo 1260's and Blizzard 1260's (the cards) are both clockable up to 100MHz however...but what's needed is a revision 6 060.
The truth is, unless you have a certified revision 6 060 (these will do 100MHz), then you can't be sure how high the CS MkI can go.

The exact text from 'cpu060'

Code: [Select]

System: 68060MC Mask 0-1f43G,2f43G-0g65V Revision 1
Settings:
(INST: Cache Burst)
(DATA: Cache Burst)
(BRANCH: Cache)
(Superscalar)
(WriteBuffer)
(Store/Load Bypass)

Register:
   CACR=$A08008000
     PCR=$04300101
BUSCR=$00000000
Then the warnings about tweaking these settings, etc.

It does have a heat sink and fan on it, which every thing I've read about the 060 says it should run cooler than an 040 and not need the heatsink or fan.  My A3640 had a heatsink without the fan.

slaapliedje

[slaapliedje]

You'd be better off buying a Nortel switch off ebay and ripping the 060 out of it. Much cheaper.

Ha!  I was thinking the same thing!  Just crazy.

slaapliedje

[slaapliedje]

1. The 060 card for FPGA arcade is not available for sale yet.

2. There is no PCI slot on the FPGA arcade so your Radeon will blow away the gfx performance of a FPGA Arcade forever and ever and ever and ever.

+ Your Radeon has massively more gfx ram than a FPGA Arcade.

FPGA arcade only has 64MB of gfx ram maximum.  You can add another 128MB of ram by buying the 060 daughtercard when it is available but that is it.  For a total ram of 192MB.  Your Radeon has more ram than that all by itself.


Blitting speed on Radeon is faster.
But...
The transfer speed, transferring gfx data from the CPU to the gfx card should be 3x to 4x faster on FPGA Replay than on your loaded deluxe Amiga Real Machine.

Remember when we were talking about transfer speed in another thread?  Well the guy who made the 060 card for FPGA Replay very nicely posted bustest results for me when I asked.  That is how I know its transfer speed is faster.  It uses more modern ramchips and so forth than our trusty old Classic Amigas.

I hadn't even realized the FPGA arcade was out.  I did know the 060 daughter card wasn't.  

I still need to figure out why my memory speeds did what they did.  When I first ran bustest on them after installing the 060, they scored around 30mb/s.  Now they're only scoring 16mb/s.  At first I thought it was due to the memory upgrade, but even after taking the new memory out, it was still at 16mb/s.  But in the interim of testing all this out, I had a faulty IDE cable that ended up with me having to go to an earlier backup of my Amiga set up..... annoying to say the least.

Would be nice if I could get fully accelerated GL on my Radeon.

slaapliedje