Ruud_at_baltissen.org
Date: 2007-11-30 18:43:07
Hallo allemaal,
A picture of the interface: http://www.baltissen.org/images/1541ide.jpg
Hardly to see but it is a 74LS138 on top of a 244 on top of a 245 on
top of the 2nd 6522. The IDE connector is glued to the 40 pins custom IC.
So far things worked out fine :) I copied a floppy to the harddisk and
copied it back to another floppy. So far there is only one little flaw: it
takes about 3 minutes to create an image and 4.5 to restore one :(
IMHO I may blame the original routines of the 1541. When creating the image
I can see the harddisk LED blink about four times a second, three times
when restoring one. Saving is slower because the 1541 automatically
performs a verify after te writing. I'm convinced that it can be done much
much faster using your own loading/saving routines but I'm already very
happy that this prooves that the idea on itself works.
http://www.baltissen.org/files/dc3.asm = the assembler file
http://www.baltissen.org/files/dc3.bas = the basic loader and executioner
z=0 : create an image
run2010 -> z=3 : restore an image
Remark: at this moment I can only save one image. The idea is asking first
what image to use and then to alter some of the the numbers in the lines
with DATA.
--
___
/ __|__
/ / |_/ Groetjes, Ruud
\ \__|_\
\___| http://Ruud.C64.org
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