Date   : Mon, 19 Dec 2005 19:38:04 +0100
From   : John Kortink <kortink@...>
Subject: Re: Connecting a BBC Micro to a PC

On Mon, 19 Dec 2005 13:20:48 +0000, Richard Gellman wrote:

>>If someone can provide me with a ready made cable from the BBC's
>>printer/user/1MHz port to a PC's printer port, I will modify the XFER
>>software to support it.
>>
>>Jon.
>>
>Been there, done that.
>
>I can tell you, its not blindingly fast on the user port either. 1MHz 
>bus might be interesting to try, but keep in mind PC printer ports 
>aren't intended for high speed data transfer, and some of the newer ones
 
>have exactly 10p spent on them, so they don't run fast at all (Since all
 
>scanners went to USB, fast printer ports are seen as a "not needed" 
>thing...).

Depends on what you want to call 'fast'.

65Link gets to around 50 to 60 KB/sec talking to a Risc
PC, and a PC version would be the same speed. 3 minutes
per 10 MB, roughly.

ZeriLink, something else I've written, connects PC +
Risc PC, gets to around 800 KB/sec. If both sides do
DMA as well then something like 1 to 2 MB/sec is
perfectly possible (depending on how fast the I/O
chip is clocked).


John Kortink

-- 

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