Time to add more serial ports. I just have the 2 that are on the motherboard. Which one to buy? I see serial boards offered by Boca, SIIG, Lava, WinComm, Rocketport, etc. It seems they all use one IR
I am using the RocketPort 4 serial PCI with no problems under Win98SE with WriteLog or TR. 73 John N5CQ Time to add more serial ports. I just have the 2 that are on the motherboard. Which one to buy?
Tony: You'll get lots of answers on this one. I am using a SIIG 4 port card along with the 2 on board ports for a total of 6. The SIIG card works well and it was easy to install on both Win98 and XP.
If the board is made to use 1 IRQ, it should work fine. And you don't need to disable the motherboard ports! If the motherboard ports are COM 1 and COM 2, then when you install the 4-port board, it s
I am using a $29.99 "house brand" card from CompUSA and it works fine under Windows XP: http://www.compusa.com/products/product_info.asp?product_code=271773 You get 2 serial, 1 parallel port. Now tha
I have two of the Byterunner PCI-410HSP-9's. They are PCI cards, use a single IRQ and have 4 serial and 1 parallel ports. Just for a test I put both of them in a single PC so that I had a total of 10
Duh - I just remembered. The Dell PC I bought only came with ONE serial port, and I needed two! - Jim == Jim Reisert AD1C, 7 Charlemont Court, North Chelmsford, MA 01863 USA +978-251-9933, <jjreisert
Whoa here! hi This is the first time I have ever heard of not being able to run FSK from a multiple COM port expansion board. Perhaps this is a PCI deal or something. Learn something new every day!
Jim et al... I have a PC which has just ONE serial port on the rear...but searching in the BIOS I found it had another (which was disabled in the BIOS). I turned it on, then searched the board and fo
I've run the Byterunner 4 COM port board, both the ISA and PCI versions, and they both work with FSK/RTTY. Barry W2UP -- Barry Kutner, W2UP Internet: w2up@mindspring.com Newtown, PA Frankford Radio C
For the record, SIIG CyberSerial PCI ports do 5-bit FSK just fine. Have been using them on two dual boot machines, under Win98SE and XPHE. Very reliable and easy to get up and running. 73, Jon K1US
Direct FSK does not use 5 bit. MMTTY, WL, etc. toggle a single serial line (TXD or RTS) to generate FSK. I don't know if the PK900 actually communicates with the serial using 5 bit mode, but I would
Author: Ron Stordahl" <ronald.stordahl@digikey.com (Ron Stordahl)
Date: Wed, 10 Jul 2002 12:54:45 -0500
Interesting.....this is surprising to me, I would have thought it would use the UART in 5 bit mode. The reason is that I would not think you could trust the timing in a multitasking machine to to gen
If the five bit data is on the TXD line, it is using the 5-bit capability of the UART. If the output is on the RTS or DTR, then the CPU is doing the bit banging. Far better to have the UART handle th
The 5 bit baudot code data is NOT on the TXD line. The TXD line only carries mark/space signaling which represents baudot characters. A fine point I realize. Look at the FSK interfaces in the WL or M
So then its irrelevant as to if the UART is programmed to generate 5, 7 or 8 bit code? Do you pick one of them just for the fun of it? It would be fun to see the actual code to see what commands are
The UART takes the 5-bit parallel Baudot code and converts it into a serial stream and its start(1) and stop(1.5) bits on transmit and conversely on Receive, it converts the 5-bit serial code, along
Author: Ron Stordahl" <ronald.stordahl@digikey.com (Ron Stordahl)
Date: Wed, 10 Jul 2002 17:06:18 -0500
Thanks Dave. You are 100% correct. And this is exactly why not all serial expansion cards will work...5 bit code is from their point of view an artifact of history...its doubtful that some even test
Dave is correct. I was wrong when I said it was bit banging. A more detailed reference to the 16550 is http://www.national.com/ds/PC/PC16550D.pdf. This doc even includes some timing charts for baudot