Re: [cc65] Why does this work in 128 mode but not 64 mode?

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> On Fri, Apr 30, 2010 at 08:07:12AM -0500, Payton Byrd wrote:
>> What is the correct way to determine if a drive exists on the IEC bus?
> 
> I'm no specialist for IEC bus operations, but I would assume that you have to
> check the status byte after an operation. Bit 7 flags a "device not present
> error" according to my documentation. 
> 
> Please note that this problem has nothing to do with cc65, so verybody with
> CBM file op knowledge should be able to help.

The correct way to check only and not do anything else:

OPEN LFN, DEVICE, 0: CLOSE LFN
IF ST AND 128 THEN PRINT"DEVICE NOT PRESENT"

Please note that the CLOSE is setting ST here and not the OPEN.

- --
						    -soci-
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