Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On 6/15/21 12:16 PM, Tom Uban via cctalk wrote: On 6/15/21 2:02 PM, Josh Dersch wrote: Just to provide some real-world data, I used a pair of KM11's to debug my 11/05, see the picture here: http://yahozna.dyndns.org/scratch/1105-debug.jpg

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On 6/15/21 2:02 PM, Josh Dersch wrote: > > > On Mon, Jun 14, 2021 at 10:34 PM Tom Uban via cctalk > wrote: > > On 6/14/21 3:39 PM, Noel Chiappa via cctalk wrote: > >     > From: Tom Uban > > > >     > it has the early version M7261E Control Logic & Mic

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On Mon, Jun 14, 2021 at 10:34 PM Tom Uban via cctalk wrote: > On 6/14/21 3:39 PM, Noel Chiappa via cctalk wrote: > > > From: Tom Uban > > > > > it has the early version M7261E Control Logic & Microprogram board > and > > > the later version M7260 Data Paths board > > > > Ah, I'm glad

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On 6/15/21 1:45 PM, Tony Duell wrote: > On Tue, Jun 15, 2021 at 4:47 PM Tom Uban wrote: >> On 6/15/21 8:58 AM, Tony Duell via cctalk wrote: >>> On Tue, Jun 15, 2021 at 6:34 AM Tom Uban via cctalk >>> wrote: >>> My KM11s are based on Tony Duell's schematic and if you look, switches S3 an

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On Tue, Jun 15, 2021 at 4:47 PM Tom Uban wrote: > > On 6/15/21 8:58 AM, Tony Duell via cctalk wrote: > > On Tue, Jun 15, 2021 at 6:34 AM Tom Uban via cctalk > > wrote: > > > >> My KM11s are based on Tony Duell's schematic and if you look, switches S3 > >> and S4 are both driving outputs rather th

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On 6/15/21 8:58 AM, Tony Duell via cctalk wrote: > On Tue, Jun 15, 2021 at 6:34 AM Tom Uban via cctalk > wrote: > >> My KM11s are based on Tony Duell's schematic and if you look, switches S3 >> and S4 are both driving outputs rather than simply switching them to ground, >> so I don't think two boa

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

While we are on the subject of pdp11/05's I am in the need of repair services for my M7261 KD11-B CPU board 1 (CONTROL LOGIC & MICROPROGRAMMED MODULE.) Bill On Tue, Jun 15, 2021, 9:59 AM Tony Duell via cctalk wrote: > On Tue, Jun 15, 2021 at 6:34 AM Tom Uban via cctalk > wrote: > > > My KM11s

Re: PDP-11/05 (was: PDP-11/05 microcode dump?)

On Tue, Jun 15, 2021 at 6:34 AM Tom Uban via cctalk wrote: > My KM11s are based on Tony Duell's schematic and if you look, switches S3 > and S4 are both driving outputs rather than simply switching them to ground, > so I don't think two boards at one time would work if these signals are simply >

Re: Large Scale Systems Museum

Dave McGuire of the LSSM reports: "We are THIS CLOSE --> <-- to having the A/C funded! Soon we will be able to hack in comfort. :-)" On Tue, 15 Jun 2021, Pontus Pihlgren wrote: Wow, my coffee has not kicked in yet :D I meant to say: Update has cooling problems as well so I know how frus

Memorex Telex IDE 711186669587 ISA controller

The recently acquired a Memorex Telex IDE ISA controller (early 1990s), number 711186669587 , that has an unpopulated floppy / tape controller area on the board. The board has 34-pin internal header and DC-37 for external drive. I would like to populate those missing components on the PC board.