HP-41 and video interface 82163a / 92198a

[Sylvain Cote]

(05-19-2015 01:21 PM)Vincent Weber Wrote:  Do you know about this othello program ?

No, but you could start from Gene version of Othello/Reversi and add the video escape sequences to make it a full screen version.

(05-19-2015 01:21 PM)Vincent Weber Wrote:  Did it make use of cursor control to redraw only the updated part

I am sure it did

(05-19-2015 01:21 PM)Vincent Weber Wrote:  Any idea how this was done on a 41 ?

Build escape sequences in alpha then send it (OUTA) to the selected video interface.
Everything must be done manually, it's very tedious but it works.

(05-19-2015 01:21 PM)Vincent Weber Wrote:  Were the bst/sst keys used for that ?

Nop!

(05-19-2015 01:21 PM)Vincent Weber Wrote:  Also it talks about being able to scroll up and down form a virtual window of 31 lines compared to the screen 16 lines.

You could look at some video samples that I have made for Christoph when he was implementing his 82163A and 92198 video interface simulators.
The tests were made using Christoph Emu71 connected to a PIL-Box from Jean-François with the real video interfaces.
Those tests could had been made easily with a HP-41CX+HPIL (or a HP-41CV+XFM+HPIL) instead.

(05-19-2015 05:03 PM)Vincent Weber Wrote:  Maybe they should have been arrows buttons on the video interface itself...

You can create small routines that does it and then assign the labels to the desired keys.

Best regards,

Sylvain

edit: typos