Saturday, 31 May 2014

First experience with 6510

My first test of the 6510 was successful.
I connected the 8500 (HMOS 6510) to an eprom, a 555-clock-circuit (right) and a transistor with an LED at the I/O-port.
The first small assembler-loop (written on my C64 with HES-Mon) flashed the LED very fast (without delay) ;-)

You see Phi from the 555 and the I/O-port on the Hameg HM-512:

Friday, 2 May 2014

PCB for Tiny Eprommer 2

The final PCB Rev. B is finished.
I called it Tiny 2.1 because I integrated the adapter for 27c512 eproms in my layout.
My Rev. B circuit is only for 12,5 V cmos eproms:

The 27c512 type and lower/upper half select is switchable.
Assembled and ready to burn: