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- CD32 Disk Drive Adapter Questions and Answers
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-
- Q: Where do I get the parts to make the CD32 Disk Drive Adapter?
-
- A:
- Most of the parts required should be available from your local
- electronics supplier. If you have trouble getting a 23 pin
- connector for the external drive, buy a 25 pin one and cut the
- end off it.
-
-
-
- Q: Do I have to use your PCB layout?
-
- A: No. My prototype board was done on Veroboard with hand-wired
- connections and it worked perfectly. Do make sure to use
- heavy ground and +5 volt connections, and don't forget the
- decoupling capacitors!
-
-
-
- Q: How many disk drives can I use at once?
-
- A: I recommend using only one drive, because the CD32 power
- supply can't provide much current. The interface will support
- 1 internal and 3 external drives, if there's enough power to
- run them.
-
-
-
- Q: I have an IBM compatible 3.5" disk drive, can I use it
- with this project?
-
- A: Most PeeCee drives can be used, but you may have to modify them
- slightly. PeeCee drives use pin 34 as 'Disk Change' instead of
- 'Ready'. ( Standards. Who needs 'em? Not IBM! )
-
- The Amiga requires 'Standard Ready' (SR or RDY) on pin 34, and
- 'Disk Change' (DC) on pin 2. Some drives have jumpers to set
- the pin functions, others have links on the circuit board. For
- example:- on the Chinon FZ-357 you put a link on RDY to get 'Ready'
- onto pin 34, and solder across a pad on the board to connect 'Disk
- change' to pin 2. You could also try simply swapping the cable
- connections going to pin 2 and pin 34.
-
- If your drive doesn't seem to have a 'Ready' signal available, just
- wire up the 'Disk Change' and forget about 'Ready'. Most Amiga
- software doesn't need it.
-
- Even though PeeCee drives are High Density, they will still be able
- to work with the Amiga 880K format. You can even use HD disks, which
- are now cheaper than Double Density disks! ( Of course you won't
- magically get 1.76MB, that would require a special Amiga HD drive ).
-
-
- Q: I don't think I am competent to make up the circuit, can I send
- you my CD32 and pay you to install it for me?
-
- A: Sorry, but I have enough to do already. You could try asking a
- local technician or electronics hobbyist to do it for you.
-
-
-
- Q: Some titles don't work since I added the interface, why is that?
-
- A: The disk drive uses a bit of memory because it is logged on as
- a DOS device. This could be enough to stop some programs from
- functioning correctly. To fix this, disconnect your drive when
- using that title. If you have an internal drive you could try
- putting a switch between pin 7 of U1 and pin 8 of U7.
-
-
-
- Q: Some games won't load from the disk drive. Why is that?
-
- A: The game may be using INDEX SYNC to read tracks. This is NOT
- supported on this interface! It could also be that the game
- is simply not compatible with a CD32.
-
-
-
- Q: How did you generate that cool PCB layout?
-
- A: With Deluxe Paint of course. By working at a resolution of one
- pixel equals 1/150th of an inch, a 1/10th inch spacing corresponds
- to 15 pixels. To get a good life-size printout from a laser printer,
- print the picture with a resolution of 150 dpi, and smoothing ON.
-
-
-
- Q: I installed the circuit according to your instructions and my
- CD32 blew up. Will you pay for the damage?
-
- A: NO! I have installed 5 of these interfaces and not one CD32 was
- damaged. So you had better check your installation. Do you think
- there's a fatal error in my circuit? Then don't build it!
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