Ports and so forth...
Just wondering if anyone knew of a really comprehensive site for pin layouts for things like your 9 pin serial ports, 25 pin parallel ports, your ISA, things of that sort? I'm planning on using one of these as an interface for a digital oscilloscope I'd like to create (and just imagine if I could use it for output too, which I assume is possible).
Actually, perhaps (and I would make the assumption) such things are digital, so it might not work unless I can create a hm, well, something to serially transmit the voltage values picked up across the input as a series of binary voltages, or something to split up an input voltage to a binary representation of it. Or, does anyone know of any communication port or bus that I can get to that allows for a variation of inputs, but can be interfaced through using software (er DOS interrupts to be specific, you know me...)? I'm planning to just transform the input voltage to whatever the acceptable limits are of whatever I end up using to interface but it must accept a range of values (hopefully a relatively large range so I don't wind up with only a few discrete voltage readings).
Anyhow that's a mouth full, appreciate any help! =)
Hm, PS, so far as the target ideal transmission, I'm looking for audio range though a bit more would be better (that is, 20Hz to 20 KHz), which it seems rules out serial from my quick search. So far as a voltage range, the more discrete values I can pick up from an analog source the better, and in the case that I need to feed it in serial thru whatever port I find, an even higher frequency would be nice, 16-bit audio transmitted serially at 320 KHz, that sounds nice. =) Thanks again, will continue my search.
Its been a long time but if I recall correctly only 4 pins of a 9 pin serial actually do anything. At least this was true back in the ribbion cable days.
I used to use Black Box's cable interfaces quite a bit and I think there was some good info on their site. www.blackbox.com
As far as ISA goes I can't help ya there.
Excuse me while I moderate myself... =)
::moving to tech board::
Also has lots of hardware information along with the interrupts and port assignments.
Ahha... good one Salem: refering me to my own Bible... =) Well I am sure to check it more extensively if you feel it is in here. I would not figure it give me port specifications as much as interface specifications though, but I will give it a shot. If anyone has any other input I would appreciate it.
>If anyone has any other input I would appreciate it.
Jan Axelson's site has lots of links to lots of information.
You could try here:
I had to use this to create my own harness plug for the sega genesis so I could have RGB, S-video, stereo audio, mono audio, etc. for the sega genesis instead of the crappy RF swtich.
Easiest way to do this (and safest so you don't end up frying your ports when you start sending it electronic signals) you could buy a rabbit c programmable microcontroller from zworld.com for cheap, you can hardwire I/O into it, and it has an rs232 interface to connect to your pc, so you wont fry anything...just a thought.