george@flight.UUCP (George Rachor ) (09/19/90)
My current setup: Apple ][gs 10 MB Sider in slot 7 2 3.5 floppys and 1 5.25 floppys using builtin interface on slots 5 and 6 AE cpm in slot 4 (currently turned off... using mouse) builtin video in slot 3 Super serial card in slot 2 used for local terminal using Snowterm Builtin serial card in slot 2 used for modem at 2400 baud (used for America On Line) imagewriter ][ hooked up to builtin printer port at slot 1 Two problems: I have tried using the super serial card at baud rates higher than 2400 without success. I am using software called Snowterm and it seems that 2400 is as fast as I can go without losing characters. Anyone know if the super serial card has problems with higher baud rates. If I use the builtin port can I expect to go beyond 2400? (Interrupts are already turned on on the super serial card). Also I have recieved an "unexpected interrupt" error from gsos when trying to save downloaded text. Anybody out there run into this? -- George Rachor Jr. Intel Corporation Hillsboro, OR 97124 george@flight.hf.intel.com
USERSIG@MTSG.UBC.CA (09/23/90)
>Anyone know if the super serial card has problems with higher baud >rates. If I use the builtin port can I expect to go beyond 2400? >(Interrupts are already turned on on the super serial card). First of all, I don't understand why you are bothering with a Super Serial Card. why not just put a switch box on port 2 so you can switch between the two connections. That's what I do and it certainly is quicker than going to the control panel to switch between modem port and your card. I assume you are using your printer port for a printer or appleshare, but if you're not, you could put one connection on the printer port and set the control panel for a modem of course. I tried a Super Serial Card in a IIgs, because a person wanted to use an old comm program that did not work with the built-in port. The program worked with the SSC in the IIgs, but not at 9600 or 19200 baud. The reason for this is that the higher speeds require interupts to be enabled on the SSC, but my GS would not work properly (or was it that it wouldn't work at all? - can't remember) with interupts turned on. I showed this person that Kermit and Procomm worked at 9600 or 19200 baud on the built-in port, so he was convinced the extra speed was worth learning a new program. You say that you have interupts enabled on your SSC. This sounds questionable. Are you sure? What ROM version do you have. I have the second ROM (ie. the one that displays ROM 01, not the original old ROM.) For a switch box, you could use either a DB25 type or a mini DIN 8 type (sold as Mac switch boxes) depending on your cable setup. Les Ferch Computing Services University of British Columbia
delton@pro-carolina.cts.com (Don Elton) (09/24/90)
In-Reply-To: message from USERSIG@MTSG.UBC.CA You can use a super serial card with interrupts on a IIgs or //e or whatever but the software has to handle the interrupts properly. My own program Talk is Cheap can enable the super serial card at up to 19,200 baud but the actual throughput is limited to around 9000 baud or so due to lack of CPU speed to handle faster with much useful work being done between characters receieved. Software that doesn't follow the rules regarding installation of interrupt handlers and so forth (which includes most other Apple // telecom packages) will cause trouble on the IIgs though, particularly if AppleTalk is enabled so you have to know about the particular software in use to know if you'll be able to use interrupts on the IIgs for telecom. UUCP: [ ucsd nosc ] !crash!pro-carolina!delton MCI: delton ARPA: crash!pro-carolina!delton@nosc.mil CIS: 72010,37 INET: delton@pro-carolina.cts.com AOL: delton pro-carolina [300-2400 baud] 803-776-3936, login: register
USERSIG@MTSG.UBC.CA (09/24/90)
>Software that doesn't follow the rules regarding installation of interrupt >handlers and so forth (which includes most other Apple // telecom packages) >will cause trouble on the IIgs though, particularly if AppleTalk is enabled so >you have to know about the particular software in use to know if you'll be >able to use interrupts on the IIgs for telecom. Oh yeah, that was it. I always have appletalk enabled so that must be why my GS went crazy when I tried an SSC with interupts enabled.