View source for Talk:83Plus:Software:usb8x/Asm Interface/MSD/MSD Initialize

I've been trying to work with this newest version.  But I seem to get an error when I MSD_Initialize, returning an error code of 8.
<code>
 ld hl,driverram
 ld a,uDriverInit
 call USBDriverCall
 jp c,driverfailed
 ld hl,appBackUpScreen
 ld de,appBackUpScreen+256
 ld a,uMSD_Initialize
 call USBDriverCall
 jp c,msdfailed          ;fails here
 ld a,uUFI_Initialize
 call USBDriverCall
 jp c,ufifailed
 ld a,uFAT_Initialize
 call USBDriverCall
 jp c,fatfailed
</code>
I'm not using zds so I'm not using the U_call macro, does there seem to be anything wrong? MSD8x the app does get past initization and displays files. {{Unsigned|Jim_e|12:48, 17 August 2006 (EST)}} 
: Error 8 is one of those not very helpful ones because it means something has gone wrong during initialization, but not any of the other error conditions I check for.  My initial reaction is to say make sure the device was not previously initialized, the port was in a reset state (plug/unplug the cable and turn on/off the calculator), and that your batteries are fresh.  It seems odd that it would work with MSD8x but not with your code, though.  Maybe Brandon will have a better idea --[[User:Dan Englender|Dan Englender]] 12:17, 17 August 2006 (PDT)
: Wow, I didn't know people were already using this. :) I'm not sure. I've never gotten error 8 while testing this. I'll keep looking, though. --[[User:Brandonw|Brandonw]] 14:53, 17 August 2006 (PDT)
: You could try zeroing out appBackUpScreen before trying to initialize. I'm not sure why that affects things (I must be using something before storing to it, somehow). I've seen this work before and I zero it out in usb8x, so I'd be surprised if it works here, but you know...one of those random things to try... --[[User:Brandonw|Brandonw]] 14:59, 17 August 2006 (PDT)