Emul+Midem

Is it possible to make the emul work with the PC modem like
with Spekovsky? Otherwise it’s kind of crap, it’s interesting to look at all the variety of Spectrum terminals at work.

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║ Max (aka LMS/Inside Law) [TEAM SPECCY rOOleZZZZ]
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02 Jan 98 15:28, Max Lanskih wrote to Vladimir Yudin:

ML> Is it possible to make the emul work with the PC modem
ML> as with Spekovsky? Otherwise it’s kind of crap, it’s interesting to look at
ML> all the variety of Spectrum terminals at work.

OK. Send us the ZX modem ports.

Sincerely
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╨╜╨╙╜╨╙ ╨ ╨

ML> Is it possible to make the emul work with the PC modem
ML> as with Spekovsky? Otherwise it’s kind of crap, it’s interesting to look at
ML> all the variety of Spectrum terminals at work.

VY> OK. Send us the ports of ZX modems.
Hayes, connected according to M. Kondratiev's scheme:
1) #0EF-#7EF - with an open NMI key (IRQ4 of the modem goes to the NMI of the computer).
2) #8EF-#FEF - with a closed one (there is always 1 on the NMI pin of the computer connector).

Good luck! Evgeny.

■ The night is shorter than the day... The day will kill me... The world of illusions burns down in it. (C) Aria.

EM> Hayes, connected according to M. Kondratiev's scheme:
EM> 1) #0EF-#7EF - with an NMI public key (IRQ4 of the modem goes to the NMI
EM> of the computer). 2) #8EF-#FEF - with closed (on the NMI pin of the
EM> connector of the computer there is always 1).

Thank you, of course, but if you think that for emulation it is enough
to know the range of addresses, then you are very mistaken. :)

PS: How is NMI used?
Best regards
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VY> Thank you, of course, but if you think that for emulation it is enough
VY> to know the address range, then you are very mistaken. :)
Eeeee... What else do you need? Bits? But, after all, this is a standard modem, with which the pisyuk itself can work. You take, for example, you catch a call to port #0EF in the emulator, and you make a call to some
FOSIL driver, or even directly to the register-port of COM port #3F8 (for COM1).
Similarly: #1EF - #3F9; #2EF - #3FA; ...
Although, you are right - I didn’t write emulators, and therefore I could be wrong...

VY> PS: How is NMI used?
Well, the same as on the PC - depending on how you program it. :))
But, according to the established tradition in the terminal structure ( :))) ) the modem sends NMI
as soon as it has a byte that it wants to “give” to the computer
(“interrupt when data is ready”, it seems). In principle, you can do both
“by readiness for transmission”, and “by BREAK state”, and for a couple of other cases...
By the way, it is precisely because of the use of interruption that speeds
approximated to pisyukov are achieved...

EM> Well, the same as on the PC - depending on how
EM> you program it. :)) But, according to the established tradition in
EM> terminal-structure ( :)))) the modem sends NMI as soon as it
EM> has a byte that it wants to “give”
EM> to the computer (“interruption when data is ready”, it seems). In
EM> in principle, you can do it “by readiness for transmission”, and “by
EM> BREAK state”, and for a couple of other cases...
EM> By the way, it is precisely because of the use of interruptions that
EM> speeds close to pisyukov are achieved...
As I understand it, this only works on ROM? where is the glitch with processing
NMI fixed?

Sincerely
┬ ┬┌┐┬┐ ┐┬┬
╨ґ╨╙ґ╨╙ ╨ ╨

VY>>> PS: How is NMI used?
EM>> Well, the same as on the PC - depending on how
EM>> you program it. :)) But, according to the established tradition in
EM>> terminal-structure ( :)))) the modem sends NMI as soon as it
EM>> has a byte that it wants to “give”
EM>> to the computer (“interruption when data is ready”, it seems). In
EM>> in principle, you can do it “by readiness for transmission”, and “by
EM>> BREAK state”, and for a couple of other cases...
EM>> By the way, it is precisely because of the use of interruptions that speeds close to pisyukov are achieved...

█▓▒░ ░▒▓█▓▒░ ░▒▓█▓▒░ ░▒▓█▓▒░ ░▒▓█▓▒░ ░▒▓█▓▒░ ░▒▓█▓▒░ ░▒▓█▓▒░ ░▒▓█▓▒░
█ Once upon a time, Monday January 19 1998 14:37, Evgeny Milun
█ wrote for Vladimir Yudin:
...
EM> For now - yes. But, in our software we want to implement the replacement of ROM
EM> with any page of RAM... Although, as far as I know, this is possible
EM> only on Scorpions and Profi...
In PeterS-256 and, naturally, in Sprinter-e.

░▒▓██ Yours sincerely, Ivan. ██▓▒░

TR-DOS 5.04Ei

IM> In PeterS-256 and, naturally, in Sprinter-e.
And also in the Pentagon with the cache...

All the best.
With respect, Roman Milukov.