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HP-41 and video interface 82163a / 92198a
05-18-2015, 09:24 PM
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HP-41 and video interface 82163a / 92198a

I am interested to find whether there would be any sense to emulate these video interfaces (through emulated HP-IL) for i41cx+ or go41cx/cxt on iOS and android.

These video interfaces could be used :
1/As a virtual printer, using normal printer operations (PRP,...). This is perfectly emulated with the direct printer emulation (82143a) as the paper is the screen.
2/To build interactive programs, with screen and cursor control, lines longer than 24 character (32 or 80) and inverse video characters.

As far as I understand, 2/, although (painfully) possible in theory through the use of escape sequence or the paname rom, had little been used on the 41. I read about attempt to build interactive games, chess or similar, that failed because screen updates were way too slow (unlike the 71B and 75C that could make use of these features efficiently).

My question is: were there any games or applications for the 41 that could make any practical usage of these features ? If yes, which ones ?

Thanks in advance and regards.
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HP-41 and video interface 82163a / 92198a - Vincent Weber - 05-18-2015 09:24 PM

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