Acer-Altos System 4500

2020-08-09 Thread Marco Rauhut via cctalk
Hi List I have here a Acer-Altos System 4500. It is a 486/33 EISA System with an Altos Basic SCSI Bsc(e) Controller. It has an Altos Multidrop/2 EISA Controller (to controll TCU Boxes that handle RS232 Ports) and a VGA1024i EISA Graphics controller. My mision is to bring that System back to l

Re: PDP-8/A transformer hum

2020-06-09 Thread Marco Rauhut via cctalk
Hi Josh, i have restored last year a PDP-8/a to and had the same experience like you with the Powersuppy. I felt also wiered about the bang in the transformer in the moment of switching it on. Marco > Am 09.06.2020 um 09:02 schrieb Josh Dersch via cctalk : > > Hi all -- > > I'm working on a

PDP8A Power Distribution Board

2018-10-21 Thread Marco Rauhut via cctalk
Hello alltogether, i am restoring a PDP8A at the moment. The machine got a problem in the Powersupply. I think one of the emergency ciruits trigger a shutdown of PSU. In tracing this isue i hab two questions. My 8A`s manufacturing year is 1977. It`s model is 8A620. On Bitsavers i found a mat

Re: Vaxstation 4000 m60 and NetBSD

2017-12-17 Thread Marco Rauhut via cctalk
Thanks for your quick answer! Hardware support say no support for LCG Graphics :-( Marco Am 17.12.2017 um 12:47 schrieb Aaron Jackson: 1.) It is not posible to switch the console from RS232 to the VGA Monitor and Keyboard. If i switch the S3 switch in down position i can only see the NetBSD K

Vaxstation 4000 m60 and NetBSD

2017-12-17 Thread Marco Rauhut via cctalk
Hello List, i playing arround with my Vaxstation 4000 60 This is a System with 40 MB Ram, 1GB Hdd, a VGA Monitor, LK201 Keyboard, VSXXXAA.B03 Mouse, and a external SCSI-CDROm dirve. With OpenVMS installed on it i have the grafical DecWindows System running. Now i have installed NetBSD 7.

Re: Sync on Green RGB video

2017-11-19 Thread Marco Rauhut via cctalk
I have the same problem with a cheap 19" LCD VGA Screen. What i made is to seperate the required sync signal with an LM1881 Video Sync Seperator. I used the standard application from the TI datasheet.The only difference is that i used an viariable resistor on pin 6 to adjust to the Sync Frequen

Re: OmniUSB - further boards to make

2017-10-03 Thread Marco Rauhut via cctalk
Yes, please... I am also reistered my interest... Marco Am 03.10.2017 um 09:17 schrieb Ed via cctalk: please send into to us as well... thanks ed# In a message dated 10/3/2017 12:12:53 A.M. US Mountain Standard Time, cctalk@classiccmp.org writes: On 10/1/2017 4:17 PM, SYLVIA MCMAHO