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Post by Cosmo Commander on Aug 10, 2004 6:01:08 GMT -5
I was wondering how the MAX233 cable stacks up against a Turbo232 cartridge. Is it just as good? Is one better than the other? Can either one be used for the Image 19.2K high speed modem mods?
I have been contemplating building a MAX233 cable. Please let me know if I should. Right now, I have a Supra Peak Modem Interface.
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Post by Jeff Ledger on Aug 10, 2004 9:28:24 GMT -5
Jim's got a new dual MAX232 interface designed that works with everything. (including Modemwars and operation terminal.) As soon as he sends his sketch of his design, I'll do another fancy layout sheet and build on myself. I'd wait on Jim... (Hey Jim... Jim? <GRIN> Jeff
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Post by CosmoCommander on Aug 10, 2004 11:42:59 GMT -5
That sounds great! I'll be waiting eagerly.
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Post by Jeff Ledger on Aug 12, 2004 2:55:55 GMT -5
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Post by Leif Bloomquist on Aug 12, 2004 3:23:46 GMT -5
Here's a link to Jim Brain's interface plans. Is the same as the high-speed interface he made for his VIC-20? (Jim?)
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Post by Jim Brain on Aug 12, 2004 15:03:44 GMT -5
The cable uses the CPU to bit bang rs232 through the interface, so it is much slower than a t232.
On a 64, the cable can do 2400, maybe 4800 tops. On a 128 (in 128 mode), you could get 9600, but no more.
The T232 can do 230,400 bps, Although realistically, 38,400 to 57,600 is about all the 64/128 can handle.
Jim
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Post by Jim Brain on Aug 12, 2004 15:09:17 GMT -5
Is the same as the high-speed interface he made for his VIC-20? (Jim?) The two are different. The VIC-20 interface is a VIC version of the Swiftlink, while the interface Jeff describes is just a Supra Peak/VIC-1101a/Omnitronix compatible cable. The advantage to my interface is that it decodes DSR/DTR/DCD pins, which the other interface designs I have seen leave off. For outbound connections (dialup and calling other systems), the three lines are not needed. But, for a BBS or an application like a game that answers the phone, those lines are important. Jim
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Post by CosmoCommander on Aug 12, 2004 19:37:50 GMT -5
Cool. Thanks for the info Jim.
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Post by METAL MAGE on Aug 25, 2004 6:17:32 GMT -5
I am using the Omnitronix Deluxe RS-232 interface with a 1' long null modem cable to connect my 64 to my PC. I am running IMAGE BBS v1.2 and BBS Server RC3 and so far things seem to work okay.
I didn't know what to set the DIP switches on the RS-232 interface to at first... there are 3 of them...
MODEM1/PRINTER1 MODEM2/PRINTER2 NORMAL/INVERTED
I use MODEM1, MODEM2, INVERTED and somehow, it works. I never tried SHIFT-T to invert the carrier detect on my IMAGE BBS software... I thought it was simply pressing the t key... to do that... hmmm...
Anyways, I wanted to know what the difference is between the following RS-232 adapters (if any)
Supra Peak Aprotek Omnitronix VIC-1011a
Jim Brain's one that he is using for Modem Wars...
Which would you want to use to run a BBS at 2400 baud?
Oh... shameless plug!!!
FORGOTTEN REALMS BBS w3productions.com
Check it out and help me beta test the settings I am using...
SysOp, METAL MAGE (me)
Dave
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Post by Jim Brain on Aug 25, 2004 15:27:10 GMT -5
normal/inverted line inverts DCD/CTS/RTS
modem1/printers chooses looping back cts to rts or feeding them to connector
modem2/printer2 switch dtr to dsr and vice versa, as I recall.
My interface is equivalent to a OMnitronix with MODEM1//NORMAL selected. I have a new schematic that allows INVERTED option..
My other interface is the Omnitronix deluxe.
Jim
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Post by METAL MAGE on Aug 25, 2004 15:44:11 GMT -5
Jim, Your interface is better than the Omnitronix interface I am using now, correct? How long does it take you to build one? I do not know how to read a schematic diagram nor am I adept with a soldering iron. Dave
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