tswenson@dgis.dtic.dla.mil (Timothy Swenson) (01/12/90)
I have recently picked up a used TRS-80 Model I with the monitor. In shipping the monitor has been trashed. Does someone know if there is a way to get the Model I to send output to a TV? Is there an RF modulator made for the Model I? Or better yet, does anyone have an old Model I monitor that they would like to part with? I hate to see this computer just sit in the closet. Can anyone help me? Thanks, Tim Swenson tswenson@dgis.dtic.dla.mil
ttak@uhura.cc.rochester.edu (Timothy Takahashi) (01/12/90)
In article <719@dgis.dtic.dla.mil> tswenson@dgis.dtic.dla.mil (Timothy Swenson) writes: > > I have recently picked up a used TRS-80 Model I >with the monitor. In shipping the monitor has been >trashed. Does someone know if there is a way to get the >Model I to send output to a TV? The model I video output is just standard composite video with a funky connector, the signal and gnd can be fed into any old composite monitor or rf modulator. i used to run my mod i w/ a rca survellance monitor and later a zenith green screen. good luck tim takahashi ttak @ uhura.cc.rochester.edu
leonard@bucket.UUCP (Leonard Erickson) (01/14/90)
The Model I video jack outputs a "normal" composite video signal. I don't have the pin assignments handy, but you may be able to locte the correct pins by trial and error. (only 3 of the 5 pins are used, one for ground, one for +5v, and one for the video signal) If you hook it up to either a composite monochrome monitor (say $90 new) or the video in jack on a TV or VCR, you should be set. -- Leonard Erickson ...!tektronix!reed!percival!bucket!leonard CIS: [70465,203] "I'm all in favor of keeping dangerous weapons out of the hands of fools. Let's start with typewriters." -- Solomon Short
bill@bilver.UUCP (Bill Vermillion) (01/16/90)
In article <719@dgis.dtic.dla.mil> tswenson@dgis.dtic.dla.mil (Timothy Swenson) writes: > > I have recently picked up a used TRS-80 Model I >with the monitor. In shipping the monitor has been >trashed. Does someone know if there is a way to get the >Model I to send output to a TV? Is there an RF modulator >made for the Model I? Or better yet, does anyone have >an old Model I monitor that they would like to part >with? > I hate to see this computer just sit in the closet. >Can anyone help me? Thanks, Well Tim, the Model I is what got me started in computers in 1977. I would say forget the model I monitor as they weren't that good to start with. It was nothing more than an RCA tv set with the tuners out. It also had a hot chassis so it had an opto-isolator card put in to keep from frying things. To put a real monitor on is a "piece of pie - cake!". The 5 pin DIN connector on the the back has 3 connections in it. One is a common ground for the other two signals. One has video, and one has 5 volts for the optoisolator. Get a cable for a mono cassette machine, one that has a 5 pin din on one side, and two rca cable on the other. Measure the one for 5 volts. Cut it off. Use the other as a direct video in from the I to a monitor. I did this years ago, and the improvement is astounding. You sould be able to pick up a used monitor (with composite input for $30 or so). Have fun! bill -- Bill Vermillion - UUCP: {uiucuxc,hoptoad,petsd}!peora!tarpit!bilver!bill : bill@bilver.UUCP