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Re: Hayes compatible modem emulation issues?

Posted on 2020-01-04, 22:09

Hmmm... It seems (while testing) that ROTT doesn't notice(when selecting COMM game) that the other side has hanged up? The DCD signal is properly lowered(and perhaps an interrupt, if enabled by the software through modem status register interrupts), but the software seems to still be waiting for the …

Re: Hayes compatible modem emulation issues?

Posted on 2020-01-04, 21:40

I've just modified the phonebook and quick dial functionality(quick dial is simply a number between 0 and 9 as the phone number) to: - Save and load phonebook entries in the original case(as in the settings file or as sent to the modem) instead of converted to upper case(when saving a phonebook …

Re: Hayes compatible modem emulation issues?

Posted on 2020-01-04, 15:24

OK. Found some missing break; statements within the command parsing code(ATE and AT\N commands). Also, phonebook errors(invalid commands for those) were aborting with OK instead of a proper ERROR. Those missing breaks caused errors when they shouldn't(Whoops!). What should the correct response be …

Re: Hayes compatible modem emulation issues?

Posted on 2020-01-04, 04:21

Hmmm... The improvements (at least with the default settings, except &S1 instead of &S0 as I'm testing it) makes Windows send an empty "AT\r" command to the modem. And WinCheckIt! Pro 4.0 seems to like the emulation as a whole a lot better(making it find the IRQ properly)? What is the actual ( …

Re: Hayes compatible modem emulation issues?

Posted on 2020-01-04, 02:44

I've just implemented the various &Q0-&Q6 handling into the modem's reporting of the status bits(it defaults at "&Q5&R1&S0" for this): byte modem_getstatus() { byte result = 0; result = 0; //0: Clear to Send(Can we buffer data to be sent), 1: Data Set Ready(Not hang up, are we ready for use), 2: …

Running Sandsifter on UniPCemu?

Posted on 2020-01-03, 20:51

I'm trying to figure out what I need to install(and how) Sandsifter by xoreaxeaxeax onto my UniPCemu (Bochs-type disk geometry(16 heads 63 SPT)) Debian disk image. Anyone knows how to exactly do that without any internet connection(except perhaps iso disk images being mounted onto the CD-ROM drive)? …

Re: Hayes compatible modem emulation issues?

Posted on 2020-01-03, 20:18

So now, while testing using Windows 95(including the WinCheckIt! 4.0 software, Hayes modem with Hyperterminal and normal dial-up for internet(using the dial-up prompt from This PC's dial-up connection folder) all have the same issue: they somehow try to eventually switch the UART to loopback mode( …

Re: Hayes compatible modem emulation issues?

Posted on 2020-01-02, 23:05

Hmm... Software doesn't seem to see when the connection is dropped(hanged up) from the other side, besides not receiving/sending anything anymore? Afaik in that case, the carrier signal is dropped, so the software should see that, but doesn't respond to it nor the NO CARRIER message?

Re: Hayes compatible modem emulation issues?

Posted on 2020-01-02, 21:23

Trying the ISP route with ROTT works as well: Filename 2020-01-02 (2).png File size 160.03 KiB Views 1216 views File comment Chatting over ROTT's connection with the other UniPCemu client. Also, 688 attack sub over the same connection: Filename 2020-01-02.png File size 163.99 KiB Views 1217 views …

Re: Hayes compatible modem emulation issues?

Posted on 2020-01-02, 20:41

OK. It works while communicating over the ethernet, but not over the Microsoft Loopback adapter? Strange(even though it's just a plain local TCP connection instead of a TCP connection routed through a router to an ISP and back to the very same computer? Perhaps a latency issue?). Although it …

Re: Hayes compatible modem emulation issues?

Posted on 2020-01-02, 19:40

Hmmm... Interesting. When trying a TCP connection locally(through the Windows loopback device) the received(or sent?) data somehow gets messed up, but when using an ethernet loopback(dialing from the UniPCemu client to the external IP address of the host, so through the modem, to the ISP, back to …

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