Re: PDP-8/I Negative-bus termination

2021-05-05 Thread Michael Thompson via cctalk
> > Date: Wed, 5 May 2021 00:03:05 -0700 > From: Josh Dersch > Subject: PDP-8/I Negative-bus termination > > Hey all -- > > Until this point I've never had any peripherals for my negibus systems > (apart from teletypes), and it occurs to me that I have no idea if the bus > needs to be terminated (

Re: PDP-8/I Negative-bus termination

2021-05-05 Thread Josh Dersch via cctalk
On Wed, May 5, 2021 at 12:27 AM Vincent Slyngstad via cctalk < cctalk@classiccmp.org> wrote: > On 5/5/2021 12:03 AM, Josh Dersch via cctalk wrote: > > Until this point I've never had any peripherals for my negibus systems > > (apart from teletypes), and it occurs to me that I have no idea if the >

Re: PDP-8/I Negative-bus termination

2021-05-05 Thread jim stephens via cctalk
On 5/5/2021 12:27 AM, Vincent Slyngstad via cctalk wrote: On 5/5/2021 12:03 AM, Josh Dersch via cctalk wrote: Until this point I've never had any peripherals for my negibus systems (apart from teletypes), and it occurs to me that I have no idea if the bus needs to be terminated (and if so,

Re: PDP-8/I Negative-bus termination

2021-05-05 Thread jim stephens via cctalk
On 5/5/2021 12:03 AM, Josh Dersch via cctalk wrote: Can anyone with negibus experience point me in the right direction? As you and Ethan helped me with on FB about my 8/I, I don't know which bus I had.  And worse it went to a second rack with about 10 of the expansion racks built out with de

Re: PDP-8/I Negative-bus termination

2021-05-05 Thread Vincent Slyngstad via cctalk
On 5/5/2021 12:03 AM, Josh Dersch via cctalk wrote: Until this point I've never had any peripherals for my negibus systems (apart from teletypes), and it occurs to me that I have no idea if the bus needs to be terminated (and if so, with what). There are 6 slots in the RF08 backplane (D01-D06) f