splendidnut

I found some people who managed to interface an ATA IDE hard drive with 8 bit computers (one did it for his Z80 based project computer, and there seems to be a lot of people who made an interface for the TRS-80 Color Computer, which is nice, since my computer shares a lot in common with the CoCo.) I don't understand completely how it works yet, but I have a general idea. If I get IDE hard drives working successfully with my computer, I might design a similar interface for a C64 or Apple II.

Currently designing a simple 6502 computer from scratch. It's inspired by Ben Eater's 6502 computer, but it features:

Much more complex address decoding

32k of usable RAM

16k ROM

3 expansion slots, 4k each (I may change it to 2 slots; one 8k and one 4k)

Programming in binary or possibly in hexadecimal with numeric keypad

Single stepping (Ben's needed the external clock module to do this)

7 segment display

Loading and saving via cassette or other media

Possibly an RS232 interface for connecting it to a dumb terminal

Possibly a more complex operating system such as BASIC

Current progress in schematics design:

Address decoding is finished but might need some optimizing

Non-IC components that directly interface with the 6502 only are 90% completed (oscillator, single stepping, reset and halt buttons, etc.)

I'll start a blog series and write entries as this project progresses.

Currently designing a simple 6502 computer from scratch. It's inspired by Ben Eater's 6502 computer, but it features:

Much more complex address decoding

32k of usable RAM

16k ROM

3 expansion slots, 4k each (I may change it to 2 slots; one 8k and one 4k)

Programming in binary or possibly in hexadecimal with numeric keypad

Single stepping (Ben's needed the external clock module to do this)

7 segment display

Loading and saving via cassette or other media

Possibly an RS232 interface for connecting it to a dumb terminal

Possibly a more complex operating system such as BASIC

Current progress in schematics design:

Address decoding is finished but might need some optimizing

Non-IC components that directly interface with the 6502 only are 90% completed (oscillator, single stepping, reset and halt buttons, etc.)

I'll start a blog series and write entries as this project progresses.

What's the worst that can happen if I use a 74LS125 instead of a 74HC125? Can it render a device at least partially nonfunctional?

Can't wait to see how GM's electric initiative will influence EV design & adoption.

"pandemic" - a disease. "epidemic" - the spread of a disease. So this is an EPIDEMIC, not a pandemic.

"pandemic" - a disease. "epidemic" - the spread of a disease. So this is an EPIDEMIC, not a pandemic.

Just sent the release candidate ROM for Sydney Hunter and the Caverns of Death for Colecovision, it has been a long way.

I'd there a particular IC or part of an Apple II plus that switches it between text and graphics mode? still trying to figure out why one tv stays in text mode and the other stays in graphics mode.

I'd there a particular IC or part of an Apple II plus that switches it between text and graphics mode? still trying to figure out why one tv stays in text mode and the other stays in graphics mode.

New AVGN episode