FPGA VAX update, now DIY TTL computers

Tony Duell ard at p850ug1.demon.co.uk
Thu Nov 3 19:30:36 CST 2005


> 
> On 11/3/2005 at 7:53 PM ard at p850ug1.demon.co.uk wrote:
> 
> >There was a hrrible thing called fake parity memory. It stored 8 bits and 
> >calaculted the parity bit on a read (ignored the incoming parity bit on a 
> >write) to keep the memory controller happy. Of course you can't store 9 
> >bits in that type of device.
> 
> Of course you can, as long as the bits you're storing agree with the parity
> of the 8 bits...

Yeah, ad I can store 16 bits per location if the high byte is the same as 
the low byte :-)

-tony


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