19 Jan
2015
19 Jan
'15
1:28 p.m.
On Mon, Jan 19, 2015 at 08:48:04PM -0000, Robert Jarratt wrote:
> -----Original Message-----
> From: cctalk [mailto:cctalk-bounces at classiccmp.org] On Behalf Of sandy
> hamlet
> Sent: 19 January 2015 19:38
> To: General Discussion: On-Topic and Off-Topic Posts
> Subject: Re: VT101 8085 CPU Fault
>
...
> might have two devices trying to access the same
line at the same time.
> Devices on the same line may include a ram, rom, I/O ports, etc.
> This could cause the processor to "hang up" and act erratic.
> A schematic of the board would be helpfull if you have one.
Something like
https://archive.org/details/bitsavers_decterminachematicFeb82_6949589 ?
Diane
--
- db at FreeBSD.org db at db.net http://www.db.net/~db