Recent content by GrantM

I previously started a post http://www.vintage-computer.com/vcforum/showthread.php?44848-Looking-for-NS405-A12N looking for an NS405-A12N. Well I managed to get hold of a NS405-B12N, the original was a -A12N and the datasheet (which is quite extensive) says nothing about the differences. It...

Hi, I'm looking for a NS405-A12N chips from National Semiconductor. It's a 48 pin DIP Video Terminal chip, with CRT Controller, 8048 micro, DMA, Char Gen, UART, Baud Rate Gen, Interrupt Controller, Parallel I/O, Timer, etc. I expect it's maybe mid 80's or so era and would be in various video...

Hi guys, I'm looking for a NS405-A12N which is a Video Terminal chip, 40 PIN DIP made my National Semiconductor. It would most likely be in something similar to maybe a VT100 type of terminal, but somebody here probably knows some product that used them. I would upload the datasheet PDF, but it...