RE: OZ-board

From: Pinxteren R.van (Ramses) (
Date: 2001-05-15 15:49:20

Isn't there an error in the block diagram? I suspect that the words
processor version and cardridge version should be swapped. The P0..P6 are
now linked to the processor and the complete controllbus is now linked to
the cardridge directly. or am I now completely in error?


> -----Oorspronkelijk bericht-----
> Van: Ruud Baltissen []
> Verzonden: vrijdag 11 mei 2001 10:25
> Aan:
> Onderwerp: Fw: OZ-board
> Hallo allemaal,
> > Perhaps, a block /functional diagram would help generate 
> more constructive
> > feedback at this early stage.
> I made a block-diagram in textform. Theoretically you should 
> be able to read
> it. But.... it is more then 80 chars wide so the text will 
> wrap around for
> some readers. That's why I attached it as a ZIP.
> The document I sent you is meant to be understood for 
> everyone with at least
> some technical skills. So if you don't understand something, 
> tell me. My ultimate goal is that everyone with at least some 
> knowledge of
> electronics should at least understand where I am talking about.
> Here is a summary of what the card should be able of:
> - hardware emulation of any 65xx-processor with an 8-bit data bus [1]
> - realtime debugger including stepmode
> - logic analyser
> - hardware emulation of ANY cartridge for the C64/128 [2]
> [1]
> - maybe other processors as well like some 68xx's, Z80
> - there is a frequency limit due to the capabilities of the 
> CPU of the PC
> [2]
> ** BLINK **  This means a BIG bulb flashing above my head.
> There was some discussion about that emulating the SCPU was very hard
> because it run on 14 (20?) MHz and that would be too fast. 
> Why? Nick said
> that the exists cores capable of running up to 50 MHz on a 
> PC. The moment
> the SCPU transfers data from/to the C64/128, thus the 
> OZ-card, it does it at
> 1 or 2 MHz. And that we can manage. The rest is PURE 
> software, no transfers
> from/to the OZ-card. So full CPU-speed.
> What about that ????
> Groetjes, Ruud
> -
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