https://wikiti.brandonw.net/index.php?action=history&feed=atom&title=83Plus%3ASoftware%3Ausb8x%2FAsm_Interface%2FMSD%2FMSD_Initialize83Plus:Software:usb8x/Asm Interface/MSD/MSD Initialize - Revision history2026-06-12T08:19:37ZRevision history for this page on the wikiMediaWiki 1.23.5https://wikiti.brandonw.net/index.php?title=83Plus:Software:usb8x/Asm_Interface/MSD/MSD_Initialize&diff=5049&oldid=prevBrandonw at 07:22, 17 August 20062006-08-17T07:22:55Z<p></p>
<p><b>New page</b></p><div>== Synopsis ==<br />
'''Name:''' MSD_Initialize<br />
<br />
'''Minimum usb8x version:''' 0.10<br />
<br />
Initializes the USB mass storage device.<br />
<br />
=== Inputs ===<br />
* HL points to a buffer for internal use (typically 254 bytes)<br />
* DE points to a sector buffer (typically 512 bytes)<br />
<br />
=== Outputs ===<br />
* C set if problems<br />
<br />
=== Destroys ===<br />
* AF, BC, DE, HL<br />
<br />
== Notes ==<br />
The exact sizes of each memory buffer can be obtained with the [[../MSDVersion|MSDVersion]] entry point. They will conveniently fit in a 768-byte buffer such as appBackUpScreen. However, it can be allocated dynamically (in this example with appBackUpScreen) as follows:<br />
<code><br />
U_CALL MSDVersion<br />
ld de,appBackUpScreen<br />
push de<br />
add hl,de<br />
ex de,hl<br />
pop hl<br />
U_CALL MSD_Initialize<br />
</code><br />
There are many reasons why this call would fail. offErrorCode will contain a more detailed error code.</div>Brandonw