DEC RK05F videos and pictures - running it naked!
bqt at softjar.se
Fri Apr 16 06:10:50 CDT 2010
ard at p850ug1.demon.co.uk (Tony Duell) wrote:
>> Oh, that bad RK8E controller just confronts me with "Data break error" :-(
> IIRC a ;'data break' is a bit like DMA. I do haev the prints and some
> technical desription, so I could help you debug this sometime...
Just for reference: databreak is exactly just DMA. It's just another
name for it. The "fun" part of the PDP-8 is that you have 1-cycle data
break and 3-cycle data break devices... :-)
You never see the 3-cycle version on any modern DMA devices...
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