Seen on eBay: Is this a Gold card?

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XorA
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Re: Seen on eBay: Is this a Gold card?

Postby XorA » Tue Jul 03, 2018 11:30 pm

Derek_Stewart wrote:Maybe the Vampire II from the A600 could be fitted to the SGC... or maybe I am just daydreaming.


You would need them to implement the missing instructions which AmigaOS never uses but apparently QDOS does!

Peter has pointed this out before!


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Peter
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Re: Seen on eBay: Is this a Gold card?

Postby Peter » Fri Jul 06, 2018 6:28 am

Derek_Stewart wrote:Maybe the Vampire II from the A600 could be fitted to the SGC... or maybe I am just daydreaming.

Would rather be possible with GC, not SGC, because the the Vampire 600 V2 has a 68000, not 68020 socket. Probably changes inside the Vampire FPGA are needed, as well as software changes.

XorA wrote:You would need them to implement the missing instructions which AmigaOS never uses but apparently QDOS does!
Peter has pointed this out before!

Primarily I meant the risk of misimplemented instructions, rather than completely missing ones. Seeing this risk comes from experiences with free 68K FPGA cores for Amiga. The Vampire core is commercial - possible that more time had been invested in correct implementation. Someone started a little testing of the Vampire with QDOS Classic on Amiga, and it looks not too bad yet.

A new Q68-style FPGA implementation using the Apollo core is probably better than a hardware adaptor for the GoldCard. I am interested in looking at this. But I have little sparetime and the Q68 still has unfinished work like TCP/IP and ethernet software.


Derek_Stewart
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Re: Seen on eBay: Is this a Gold card?

Postby Derek_Stewart » Fri Jul 06, 2018 4:55 pm

Hi Peter,

The Amiga A600 has its 68000 soldered to the PCB. The Vampire has a socket that fits over the A600 CPU and 2 securing bolts to keep the two boards secure.

The Gold Card CPU is in a socket so will not physically fit the Vampire board, without some sort of converter.

So I have put it back on to the Amiga.


Regards,

Derek
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Peter
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Re: Seen on eBay: Is this a Gold card?

Postby Peter » Sat Jul 07, 2018 8:25 am

Derek_Stewart wrote:The Gold Card CPU is in a socket so will not physically fit the Vampire board, without some sort of converter.

Yes, that's what I meant by hardware adaptor.


Derek_Stewart
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Re: Seen on eBay: Is this a Gold card?

Postby Derek_Stewart » Sat Jul 07, 2018 10:03 am

Hi Peter,

There is a 68 pin PLCC adaptor made by Winslow Adaptics:

http://www.winslowadaptics.com/product. ... ctid=14494

BUt according to the data sheet, the length of the male plugs is between 16mm - 22mm, which does not fit in the QL case and the adaptor looks to expensive.


Regards,

Derek

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