I learned everything I know about the 8085A from these two books:
Intel 8085A User's Manual (Intel Corporation 1985)
http://www.bugbookcomputermuseum.com/8085A-Cookbook.html
James
Pet Monster,
Have you taken a look inside your computer to see if there are any devices that regulate current to USB ports? Maybe something like a TPS2032D, or similar? If so, there is a chance it will have an OC output that is asserted when an overcurrent or thermal shut down occurs. You...
You don't necessarily need a LCD controller. If you want to display video or VGA input, a COTS controller board would be an easy way to go. If you are just going using it as a GUI, then you can probably drive it with TTL signal levels. Does your controller board have any type of VGA or NTSC...
If push comes to shove, that's what I'll do, but I was hoping to make it pull the same current regardless of any voltage change on the supply under test, using the feedback loop.
I did consider doing that with an inverting op-amp, but the control voltage I'm generating for the negative current regulator circuit is already taken from a -12V supply, thus already negative. Wouldn't this be the same as inverting a positive control voltage?
Hey guys, I'm working on a circuit that is an adaptation of something I found online awhile back. The first adaptation of the original circuit I made (shown below) draws a fixed amount of current from a positive voltage external supply. The idea is that the amount of current flowing through...
I'm not sure what kind of 8085A emulator you are using, but a real life 8085A will fetch and execute whatever instruction the Program Counter points to, be it "DCR M" or "DCX rp." Either of these instructions can be used to decrement a 16-bit number, but if you examine the instruction set...