1944GPW
Veteran Member
I was looking at this LSI-11 bundle on eBay https://www.ebay.com/itm/193172448035
and noticed the switches and lights console board is different to the one described on PDF pages 170-171 of the 11/03 schematics at http://www.bitsavers.org/pdf/dec/pdp11/1103/1103_Schematics.pdf
It doesn't appear to have the LTC clock neither does it have the slave socket, and the cable seems soldered directly to the back of the board. I'm not sure where the schematic for this later non-LTC board is, presumably in bitsavers somewhere but I didn't find it. Presumably CPUs more capable than the LSI-11/2 dealt with the LTC otherways, and this small card frame was more for them.
I know there are a number of workalike circuits including Diane's, Windstream and Malcolm's Arduino but has anyone reproduced either version of this original switches board (p/n 5011807) say in KiCAD/EagleCAD or have a Gerber(?) file?
I have a 5011807 but sadly I'm not a user of either of these two PCB suites, and wonder whether it would be easier to just draw two etching masks by hand from the board. I have an H9282 and a 3rd-party MDB quad backplane and I think it would be nice to have a really close to original as possible reproduction of the whole console assembly (bezel, switches, paddles and LED receptacle are already done).
Thanks
Steve
and noticed the switches and lights console board is different to the one described on PDF pages 170-171 of the 11/03 schematics at http://www.bitsavers.org/pdf/dec/pdp11/1103/1103_Schematics.pdf
It doesn't appear to have the LTC clock neither does it have the slave socket, and the cable seems soldered directly to the back of the board. I'm not sure where the schematic for this later non-LTC board is, presumably in bitsavers somewhere but I didn't find it. Presumably CPUs more capable than the LSI-11/2 dealt with the LTC otherways, and this small card frame was more for them.
I know there are a number of workalike circuits including Diane's, Windstream and Malcolm's Arduino but has anyone reproduced either version of this original switches board (p/n 5011807) say in KiCAD/EagleCAD or have a Gerber(?) file?
I have a 5011807 but sadly I'm not a user of either of these two PCB suites, and wonder whether it would be easier to just draw two etching masks by hand from the board. I have an H9282 and a 3rd-party MDB quad backplane and I think it would be nice to have a really close to original as possible reproduction of the whole console assembly (bezel, switches, paddles and LED receptacle are already done).
Thanks
Steve
