E: Shift Registers as Delay Lines (was Delay lines in TV

Now that sounds familiar. Two for an 80 character line (8bits) 7 bits for the ASCII code and one for the extending under line cursor. 48 for 24 lines = six rows of eight on the board. Add address counters etc. Yup that could have been it. Rod -----Original Message----- From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org] On Behalf Of Steve Thatcher Sent: 20 December 2007 20:18 To: General Discussion: On-Topic and Off-Topic Posts Subject: Re: E: Shift Registers as Delay Lines (was Delay lines in TV actually Texas Instruments had a quad 80 bit MOS shift register package available in the early to mid seventies. I had used two of them for a frame buffer on a CRT controller design I did. The part number was TMS3409 I believe and it was something I got from the surplus market. -----Original Message-----