Before landing on this page, you and I were only separated by a mere three degrees. Now we can be one on the web. That's not the definition of technological singularity but it should be.
With this tumblog, I promise kittens and balls of yarn for the kittens to play with. There will be some making out and a lot of hand-holding. I hope that when you are lonely and lost on the outmost corners of the interweb, you can come here and find yrself and feel the good vibrations. You are special and no one can touch that!
Your Pal Mal
This week my boyfriend and I exchanged passwords.
I thought this was a pretty trusting move of us, but now realize it’s one-sided since all of his e-mails are written in code anyways…
“David,
I looked at the VGA box schematic and it looks like the Hsync comes out on the 15 pin connector on pin 13 and the Vsync on pin 14. Both of these signals are pulled up to +5v and come from the output of the 74HCT244(pins 16 & 18). The 244 is a Tri-State Octal bus driver and can be disabled with a high (+5v) on pin 1 of the 244. I think the VGA box has an enable switch for VGA mode?? I would verify that the 244 is enabled (pin 1 is at ground) and that the outputs (pins 16, 18) follow the input. If the 74xx244 is enabled, it should be able to properly drive the 74ls04, since the ouput of the 244 is TTL. If the outputs of the 244 are enabled and you can see TTL levels (+ & -) on the output, then we would have to suspect that the 74ls04 is bad. I would also make sure that there is a common ground between the VGA box and the 74LS04 device. I’m not sure if any of this will help, but I don’t mind trying.
- Mike”
