Never mind about /IORD and /IOWR - those are the only read and write IDE control lines. I had been looking at the CF pinouts. I'll stick to IDE pinouts (40 pin). Whoops!

Thanks, Scot! I'm going to stick with FIG Forth for now. I'll make sure to incorporate the UM/MOD fix (http://6502.org/source/integers/ummodfix/ummodfix.htm). I will be getting back to this project soon. I've begun arranging components on my board.

Quick question - does anyone know if I could use ...

Absolutely. There's a circuit diagram in the "circuit potpourri" section for doing it, along with sample 6502 code linked. If you're thinking of power consumption though, ditch the NMOS 6502 and 6522 and use CMOS only. CMOS gives a lot of advantages besides just lower power; like more instructions ...

Hi Scot,


I'm really not the person you want to be asking about hardware -- don't tell anybody, but occasionally I have to remind myself what the red and what the black wire do ...

No worries! Long, long ago I thought I'd need a 35V power supply to drive seven 5V chips :?

But that's in the ...

Thank you!

Everything you want to do is possible. Note that the high-density flash ICs are 3.3V, not 5V, so you'll need voltage translators, and serial ones (SPI, SD card, etc.) have very few lines to deal with, and to make it even better, each one is unidirectional, making the job easier. CF OTOH has a ton ...

OK, that sounds good! I'll definitely add a heatsink to my 7805. I'm also going to invest in a ZIF socket for the EEPROM ;)

A few other questions: Is it possible to use some sort of permanent storage with FORTH (e.g., a CF drive)? I'd just be interested in storing new words (the updated dictionary ...

Thank you for the primer! Indeed, I have bookmarked that page

Hi Scot,

Thank you very much for your response! Good to hear that my idea is quite plausible :)

Also great to hear that 6502 assembly is easy to understand! I see the big difference between the 1802 and the 6502 is the "lack" of registers in the 6502 (use of the zero page instead as well as X/Y ...

Hi everyone! This is my first post in the 6502.org forum.

I got my start in homebuilt computers through the famous 1802-based COSMAC ELF. I've added RS-232, a hex keypad, and a 16x16 LED display to my ELF so far. Eventually, I plan to add a 128x64 LCD so I can play CHIP-8 games :-)
Pictures of my ...