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HP-41 and video interface 82163a / 92198a
05-20-2015, 06:35 PM
Post: #22
RE: HP-41 and video interface 82163a / 92198a
(05-20-2015 12:46 PM)Vincent Weber Wrote:  I tried to use the video display in Emu41 and I have the following questions:
1/it seems that neither 32 nor 80 column are emulated, but 40. Why ?
2/it seems that video inverse characters and cursor blinking is not emulated. why ?
3/what is the use of emulating the 82143a printer over emulating the video interface since you don't emulate the graphics ?
4/why not emulating the 82162a printer ?
5/Can you confirm that you are not aware of significant applications that would make use of these features ?

Hi Vincent,
That's a lot of "why".
To make it short, the answer could be "because", or "why not".
Because I did it in that way more than 15 years ago.

Seriously, some answers about Emu41:
1/ I restricted the screen width to 40 columns because I wanted to keep half the screen for a key mapping help, and I wasn't trying to emulate a particular HP device.
2/ 3/ 4/ because ... Emu41 was (still is) a text-mode DOS application. No graphic. However, blinking cursor and cursor types are emulated.
5/ Yes, I don't know any serious HP-41C application using the video escape sequences.

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RE: HP-41 and video interface 82163a / 92198a - J-F Garnier - 05-20-2015 06:35 PM

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