Hi Vladtix, et al."vladitx" <vladitx@nucleusys.com> wrote in message bf46dc4c-fb7b-47ec-848d-b63b41dcac75@z28g2000prd.googlegroups.com">news:bf46dc4c-fb7b-47ec-848d-b63b41dcac75@z28g2000prd.googlegroups.com...
On Dec 28, 1:38 pm, David Wilson <mcs6...@gmail.com> wrote:
P.S. My first IIe was a clone made by Multitech - the MPF-III. It has a 40 track 1/2 height 40 track direct drive FDD with an adapter board that converts the Apple 20 pin bus into the standard 34 pin bus. It uses a couple of one-shots and a PAL to do the conversion.My solution is similar, except it uses modern HD drives and media. Everything is packed into a single CPLD (with stabilized oscillator) which does the pulse conversions between 250 and 500kbit/sec.
Are you planning on making the code available for download? Would be keen to play with it. Are you using Xilinx or ALtera devices? (not that it really matters)
I should have shown in the videos that the converting board is plugged into the regular Disk ][ controller and it's not a slot device with it's own firmware, etc.
It is quite visible in the second video! Cheers, Red