bobl@pro-graphics.cts.com (System Administrator) (07/02/90)
Is there a CDA or something out there that will allow the GS modem port to go
beyond the 19.2k baud speed? If so, where is it or can someone binscii it and
mail it to me? I just purchased a Hayes Ultra on the SysOp plan and with V.42
bis, it will transfer at an effective 38.4k baud. Too bad the lousy modem
port will only configure out to 19.2. I hear there is a CDA available that
will bypass the modem port firmware, is this true?
I'm beginning to feel that I'm working on a computer that has fallen behind
the times here..I hope someone can help before I have to pack this GS in and
go with something that can support the current technology...
-- Bob
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Raven Enterprises - 25 Raven Ave. Piscataway, NJ 08854ART100@psuvm.psu.edu (Andy Tefft) (07/02/90)
I'm really curious as to whether serial port speedup can be done in software for any computer. I recently read in a catalog an ad for software that's supposed to let your serial ports (IBM's and clones) run as fast as "115.2 KBPS - just as fast as your centronics port!" (actually this was a throw-in going with something to let you hook up multiple computers to one printer).
mdavis@pro-sol.cts.com (Morgan Davis) (07/03/90)
In-Reply-To: message from ART100@psuvm.psu.edu The supposed enhancement for the IIGS modem port to allow it to operate at 38.4Kbps is a little misleading. The 8530 SCC chip in your IIGS has the ability RIGHT NOW to operate at 38.4Kbps, only Apple didn't put that speed setting into the serial port *firmware* command recognition. One would surmise that it was left out because the firmware has enough trouble handling 19.2Kbps throughput on a stock IIGS. Perhaps a Transwarped IIGS could handle 38.4Kbps, for which the speed enhancement would be excellent. Most commercial IIGS terminal program (i.e. MouseTalk) bypass the serial port firmware altogether, with dramatic speed/performance improvements since they go directly to the 8530 SCC. So if you expect this enhancement to affect all of your communications software, it won't--only those that use the serial port firmware. UUCP: crash!pnet01!pro-sol!mdavis ProLine: mdavis@pro-sol ARPA: crash!pnet01!pro-sol!mdavis@nosc.mil MCI Mail: 137-6036 INET: mdavis@pro-sol.cts.com America Online, BIX: mdavis
gwyn@smoke.BRL.MIL (Doug Gwyn) (07/03/90)
In article <3374@crash.cts.com> bobl@pro-graphics.cts.com (System Administrator) writes: >Is there a CDA or something out there that will allow the GS modem port to go >beyond the 19.2k baud speed? The baud rate is a function of the 8530 SCC chip, which of course you're stuck with, the 3.6864 MHz crystal oscillator attached to it, which cannot be changed without breaking the use of the serial ports by other software, and the set of parameters that you load the 8530 with to specify how to divide down the oscillator to obtain the bit rate. Using a divisor of 1, you can attain up to 614.4 Kbps. However, the built-in port firmware does not provide access to this, so you must roll your own software. I have a C header for the GS 8530 that makes programming this critter easier, if you need it. >I'm beginning to feel that I'm working on a computer that has fallen behind >the times here..I hope someone can help before I have to pack this GS in and >go with something that can support the current technology... 19.2Kbps is hardly "current technology". Incidentally, the effective transfer rate will probably be less than the link-level bps used, due to overhead in the software driving the port.
tribby@hpindwa.HP.COM (David Tribby) (07/03/90)
mdavis@pro-sol.cts.com (Morgan Davis) writes... > > Most commercial IIGS terminal program (i.e. MouseTalk) bypass the serial port > firmware altogether, with dramatic speed/performance improvements since they > go directly to the 8530 SCC. > If the program goes directly to the 8530, can slot 2 be set up to be "Your Card" instead of the modem port? I sure would like to move my Sider's card out of slot 7, where it comes awfully close to my OctoRAM memory card. --Dave Tribby - - - - - ARPA: tribby%hpda@hplabs.HP.COM UUCP: hplabs!hpda!tribby
rond@pro-grouch.cts.com (Ron Dippold) (07/04/90)
In-Reply-To: message from bobl@pro-graphics.cts.com > Is there a CDA or something out there that will allow the GS modem > port to go beyond the 19.2k baud speed? If so, where is it or can I don't have it (no need) but you can look for the FASTPORT CDA which opens up the modem port beyond its normal limits. UUCP: crash!pro-grouch!rond ARPA: crash!pro-grouch!rond@nosc.mil INET: rond@pro-grouch.cts.com
dlyons@Apple.COM (David A. Lyons) (07/05/90)
In article <54240003@hpindwa.HP.COM> tribby@hpindwa.HP.COM (David Tribby) writes: >If the program goes directly to the 8530, can slot 2 be set up to be >"Your Card" instead of the modem port? I sure would like to move my Sider's >card out of slot 7, where it comes awfully close to my OctoRAM memory card. Yes, because the serial chip is not accessed through the slot-2 I/O locations ($C0A0..C0AF). -- David A. Lyons, Apple Computer, Inc. | DAL Systems Apple II Developer Technical Support | P.O. Box 875 America Online: Dave Lyons | Cupertino, CA 95015-0875 GEnie: D.LYONS2 or DAVE.LYONS CompuServe: 72177,3233 Internet/BITNET: dlyons@apple.com UUCP: ...!ames!apple!dlyons My opinions are my own, not Apple's.
V2071A@VM.TEMPLE.EDU ("George A. Piotrowski Jr") (07/05/90)
On 3 Jul 90 16:49:37 GMT you said: >mdavis@pro-sol.cts.com (Morgan Davis) writes... >> >> Most commercial IIGS terminal program (i.e. MouseTalk) bypass the serial port >> firmware altogether, with dramatic speed/performance improvements since they >> go directly to the 8530 SCC. >> >If the program goes directly to the 8530, can slot 2 be set up to be >"Your Card" instead of the modem port? I sure would like to move my Sider's >card out of slot 7, where it comes awfully close to my OctoRAM memory card. > >--Dave Tribby > - - - - - > ARPA: tribby%hpda@hplabs.HP.COM UUCP: hplabs!hpda!tribby Dave, If you use a program like Proterm, Yes you can set the slot to your card. I am not using it that way at work right now because I am using Proterm and GBBS.Pro, and GBBS needs Slot 2 set to modem port inorder to work. But before I was using GBBS, I had an Apple SCSI card in slot 2, with the setting for your card. I even had a switch box on the modem port to switch between the modem and an Appletalk box for printer to a LaserWriter. It all seemed to work ok except for the fact that when you boot to GSOS first, then go to Proterm, certain interrupts seem to be set that cause Proterm to garble data. (This is not to imply that it is the system causing the problem, but that Proterm is probably not handling the interrupts that are left active for printing on the network - Appletalk active.) Try it. But I would suggest that you make a backup of the HD first just in case there is a problem. As I said, with the Apple SCSI card, there were no problems. Also, it's nice to see Matt and Dave back on the net. I hope that the reason we haven't seen them much recently on the net is because they are working on many goodies for the Apple //s. Later, ________________________________________________________________________ George A. Piotrowski, Coordinator CREN/Bitnet: V2071A@TEMPLEVM Educational Computing Center Internet: v2071a@vm.temple.edu Temple University America Online: GaPio Philadelphia, PA 19122 Compu$erve: 74046,1304 (215) 787-6228 Genie: G.PIOTROWSKI Doc Brown: Obviously, the Time Continuum has be disrupted creating this New Temporal Event Sequence resulting in this Alternate Reality! ________________________________________________________________________ Acknowledge-To: <V2071A@VM.TEMPLE.EDU>
gwyn@smoke.BRL.MIL (Doug Gwyn) (07/05/90)
In article <54240003@hpindwa.HP.COM> tribby@hpindwa.HP.COM (David Tribby) writes: >If the program goes directly to the 8530, can slot 2 be set up to be >"Your Card" instead of the modem port? Yes, the SCC registers are accessed at addresses $C038..$C03B, which do not depend on the Control Panel slot assignment.
mdavis@pro-sol.cts.com (Morgan Davis) (07/05/90)
In-Reply-To: message from tribby@hpindwa.HP.COM > If the program goes directly to the 8530, can slot 2 be set up to be > "Your Card" instead of the modem port? Yes, at least with MouseTalk (as I wrote the drivers for it). The same is true for printing under MouseTalk. It writes directly to the 8530 when printing, so you can opt to switch slot 1 to "Your Card", too. In essence, if you use MouseTalk for your communications work, you can free up slots 1 and 2 for your own cards rather than rendering them "empty" and useless so that you can use the built-in ports. It is neat, but it certainly isn't condoned by Apple. UUCP: crash!pnet01!pro-sol!mdavis ProLine: mdavis@pro-sol ARPA: crash!pnet01!pro-sol!mdavis@nosc.mil MCI Mail: 137-6036 INET: mdavis@pro-sol.cts.com America Online, BIX: mdavis