8255 based IDE Disk Drive Interface

Reference: Tindie > Modules > 8255 based IDE disk drive interface for RC2014; https://www.tindie.com/products/Semachthemonkey/8255-based-ide-disk-drive-interface-for-rc2014/

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Note that there is no support to load or save files from a standard RC2014 running BASIC.
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I tested both, 2.5" notebook and 3.5" hard disk drives. The module works perfectly. But you have to take care of the power supply. The 3.5" hard disk needs a 12 Volt connection anyway. But also the small 2.5" hard disk needs 0,7 amps and at the start but up to 2 amps!

Update 01.08.2021

All the time I have been working with a nice small and very quiet 2.5" notebook hard drive, but every now and then there were problems with the power supply or when switching on; the hard disk did not start. A stronger power supply unit with 2.5 or 5 amps did not bring the desired success. So I took a 3.5" hard drive (with 5 and 12V), connected a dual plug power supply and now everything works fine. The hard drive is a little louder, but once everything is installed in the ATX housing, you won't hear anything anyway.

With 20 GB, this hard disk is of course hopelessly oversized for RomWBW CP/M. But it works well. I have several of these in stock.

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External links

• Ed Brindley:
• tindie.com / „old“ IDE Adapter PCB for the RC2014
• Spencer Owen:
• tindie.com / „new“ IDE Adapter PCB for the RC2014

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Internal links

• RC2014 menu