1.78mm between pins.

So I bought a V9983 video display chip and didn't realize they only came in a SDIP package. It is a 64 pin chip. Now I am kind of short on cash and still have to design the "video card" for my homebrew computer, so can't really go the PCB route. Is there any adapters or something else I can do to ...

The gibberish was a really simple fix. It was due to incorrect frequency (thought it was 19200 not 9600) in the terminal. It seems to all work now.

Well it seemed to have been a mixture of broken crystal and not grounded crystal. I think the reason it worked when I touched it was my finger was grounding the case. Thanks for the info, didn't realize they had to be grounded. I don't know how it worked before, probably a stray ground wire ...

I have pretty much finished transferring my homebrew computer from bread to protoboard, however I seem to be having a problem with the serial circuit. It's a 6551 chip, with a MAX232 to convert voltages. It seems the circuit works when I press down on the crystal, while resetting. Thought it could ...

Is there a list I can pull up of various connectors? Trying to search Wikipedia but mostly find bus architectures, not what the actual slot/socket is called. I am building a simple expansion interface into my 6502 based computer so I can mess around with other circuits/devices, without breaking the ...

Rmember the DCD\ input must be low for the receiver to operate.

For a faster loop (not that it really matters this time), you can use BIT. It's faster because the same instruction that does the fetching also does the ANDing, altering only the status register (bits N, V, and Z) and not the ...

Have transferred my homebrew computer from breadboard to protoboard, and it seems everything is working. There are only two problems. First I didn't soder the 1.8mhz crystal, instead wrapped the appropriate wires. However sometimes if the right pin of the crystal is touched, the connection freezes ...

Going to add into this post to avoid another thread. I am designing a expansion interface so I can put the stuff I have now (RAM, ROM, ACIA, and CPU) onto a pcb (co-worker has the tools to make one), and then I can add things to it w/o breaking the main board (wires popping out due to it being on a ...

Super, now it's outputting Xs onto the terminal :D. I can now being actually coding a monitor or something! Thank's Garth about the info with the 22pf cap, wasn't working w/o it.

So there was a lot of confusion I had with 10u and 1uf. I thought f was the unit and u just ment micro? Don't know much ...

BigEd: I didn't have 1uf capacitors on hand so will test today when I pick em up. Only thing I noticed is a random character (usually a Cyrillic y or something) appears on powerup, and if TX is connected by itself (w/o RTC or CTS) it starts to output the y over and over. However an X should be being ...

Hey again, the R65c51 I ordered finally arrived. Been trying to get it to work. I connected it up pretty much to how it's connected in this circuit
http://members.multimania.co.uk/leeedavison/6502/acia/index.html.

Only thing different is I wired the XTAL1 and 2 to a actual crystal. The crystal is ...

Yea, saw an example circuit. The two pins above Vcc were tied high. Forgot the other ones name but /DCD was one of em.

Everything is already pre-wired, so I just have to drop the two chips in now.

Added:

Been playing around with the NES APU that is built in (while I wait for the 6551), and got ...

Seems so. The initialization of the LCD, and printing characters to it are done with subroutines. Same with enabling and generating sound from the sound generator. Also I threw in some loading and saving to the ram on certain parts to test it.

My professor suggested once I get the serial interface ...

LCD Works!!!!! I was hitting me head on the desk trying to figure out why it wasn't working. I was looking at this (http://www.6502.org/mini-projects/optrexlcd/lcd6502.gif) trying to figure out WTF it wasn't working. Then I noticed that last NAND on the E line... then checked the datasheet... E was ...