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Groups > comp.sys.apple2.programmer > #3264 > unrolled thread
| Started by | ultramagnus_tcv <mikew@thecomputervalet.com> |
|---|---|
| First post | 2017-02-08 11:35 -0600 |
| Last post | 2017-02-11 06:39 -0600 |
| Articles | 5 — 3 participants |
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IIGS Modem Port DTR/DSR/CTS/DCD ultramagnus_tcv <mikew@thecomputervalet.com> - 2017-02-08 11:35 -0600
Re: IIGS Modem Port DTR/DSR/CTS/DCD roger.shimada@gmail.com - 2017-02-08 19:39 -0800
Re: IIGS Modem Port DTR/DSR/CTS/DCD ultramagnus_tcv <mikew@thecomputervalet.com> - 2017-02-09 11:36 -0600
Re: IIGS Modem Port DTR/DSR/CTS/DCD Hugh Hood <hughhood@earthlink.net> - 2017-02-09 21:30 -0600
Re: IIGS Modem Port DTR/DSR/CTS/DCD ultramagnus_tcv <mikew@thecomputervalet.com> - 2017-02-11 06:39 -0600
| From | ultramagnus_tcv <mikew@thecomputervalet.com> |
|---|---|
| Date | 2017-02-08 11:35 -0600 |
| Subject | IIGS Modem Port DTR/DSR/CTS/DCD |
| Message-ID | <o7fkpi$v3s$1@dont-email.me> |
Staring the IIGS modem port pin-out inside the hardware reference manual, I see that this pin-out: 1 DTR 2 HSK1 (Handshake in) 3 TX Data - 4 GND 5 RX Data - 6 TX Data + 7 GPI 8 RS Data + I'm more used to the full 25-pin pinout and am trying to understand there the following signals are used: DSR CTS DCD Is this all handled in software? m
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| From | roger.shimada@gmail.com |
|---|---|
| Date | 2017-02-08 19:39 -0800 |
| Message-ID | <3d311d59-8371-4080-b345-1c17d1cd7dab@googlegroups.com> |
| In reply to | #3264 |
On Wednesday, February 8, 2017 at 11:35:26 AM UTC-6, ultramagnus_tcv wrote: > Staring the IIGS modem port pin-out inside the hardware reference > manual... Whaa, I used to know that stuff once.... Checkout IIGS TechNote #30 - updates to said manual - which I think will tell you what you want to know http://www.1000bit.it/support/manuali/apple/technotes/iigs/tn.iigs.030.html
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| From | ultramagnus_tcv <mikew@thecomputervalet.com> |
|---|---|
| Date | 2017-02-09 11:36 -0600 |
| Message-ID | <o7i977$k72$1@dont-email.me> |
| In reply to | #3265 |
On 2017-02-09 03:39:14 +0000, roger.shimada@gmail.com said: > Checkout IIGS TechNote #30 - updates to said manual - which I think > will tell you what you want to know > http://www.1000bit.it/support/manuali/apple/technotes/iigs/tn.iigs.030.html > It does! Thank you. :-)
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| From | Hugh Hood <hughhood@earthlink.net> |
|---|---|
| Date | 2017-02-09 21:30 -0600 |
| Message-ID | <xeudnSO0LvIlrgDFnZ2dnUU7-LPNnZ2d@earthlink.com> |
| In reply to | #3266 |
Mike, It appears the Tech Note had what you needed, but in a nutshell, the IIGS really only has one pair of handshake lines [HSKout/HSKin](excluding GPin), whereas an RS-232 25-pin device connector has at least two pairs of handshake lines [DTR/DSR and RTS/CTS] plus DCD. So, you select which pair of device handshake lines you want to use (or jumper between them - several ways to do that) and route those to the GS' HSKout/HSKin lines. Modems usually supply a 'DCD' line for 'carrier detect', and that is routed to the GS' GPin line, which will be detected by software that uses this line, which is generally terminal programs. Hugh Hood On 2/9/2017 11:36 AM, ultramagnus_tcv wrote: > On 2017-02-09 03:39:14 +0000, roger.shimada@gmail.com said: > >> Checkout IIGS TechNote #30 - updates to said manual - which I think >> will tell you what you want to know >> http://www.1000bit.it/support/manuali/apple/technotes/iigs/tn.iigs.030.html >> > > > It does! Thank you. :-) >
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| From | ultramagnus_tcv <mikew@thecomputervalet.com> |
|---|---|
| Date | 2017-02-11 06:39 -0600 |
| Message-ID | <o7n0j1$8hf$1@dont-email.me> |
| In reply to | #3267 |
On 2017-02-10 03:30:05 +0000, Hugh Hood said: > Mike, > > It appears the Tech Note had what you needed, but in a nutshell, the > IIGS really only has one pair of handshake lines > [HSKout/HSKin](excluding GPin), whereas an RS-232 25-pin device > connector has at least two pairs of handshake lines [DTR/DSR and > RTS/CTS] plus DCD. > > So, you select which pair of device handshake lines you want to use (or > jumper between them - several ways to do that) and route those to the > GS' HSKout/HSKin lines. > > Modems usually supply a 'DCD' line for 'carrier detect', and that is > routed to the GS' GPin line, which will be detected by software that > uses this line, which is generally terminal programs. Thanks for explaining it. The graphics on that tech note also make it pretty straightfoward to follow. :-) I've recently got Warp 6 functioning on my IIGS with tcpser. One thing I'd like to solve is helping Warp6 detect a lost carrier. It's a bit mind-bending with the null in place, but I'm hopeful to trace out the lines and make a custom cable.
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