http://en.wikipedia.org/wiki/STEbus has had the pinout and signal description added, since this information is hard to find elsewhere.

Hope this helps. If people do design a board to drive the STEbus, I could take a look at it to spot any glaring errors.

I merged all my stuff, plus stuff borged from other websites, together and I have over a DVD's worth or retrocomputing stuff.

Of course document scans are the bulk of this, and I could easily trim out stuff available elsewhere.

Will I be able to log in and upload corrections / additions as I make ...

I have lots of STEbus board manuals (I wrote many of them), and quite a few boards (Z80, SCSI, FDC, 68020) as well.

I wrote the manuals with the content I would want to see, so they have sections for an introductory description, 'how it works', links and options, how to use the board, memory maps ...

A workmate of mine showed me a battery driving one transistor and one coil (and a few other discretes) driving a nixie digit.

It was very low current, and you could touch the electrodes without feeling anything.

IIRC, the digits needed a high-ish voltage to strike but a lower voltage would then ...

The 6507 is a 6502 in a 28-pin package.

The silicon is the same for both, only some of the signals are not taken to pins on the 6507.

I used a 6502 when I copied a disk doubler for the Atari 105 disk drive, which normally uses a 6507.

it worked fine.

http://www.howell1964.freeserve.co.uk/p ... M_6502.htm

is a simple yet effective DRAM interface for the 6502

http://www.howell1964.freeserve.co.uk/logic/acorn_atom_project.htm

It is pretty much a "system-on-a-chip".
Plug in a TV and a keyboard, type in a BASIC program and away you go.
The BASIC is well tested and has on-line manual.
Pixel and Line-drawing commands already in there.

It does PAL/NTSC ...