Changeset 105 for trunk/bootcode/airboot.asm

Timestamp:

Apr 8, 2017, 12:27:02 AM (8 years ago)

Author:

Ben Rietbroek

Message:

Moved the INT13X DAP to the BSS [v1.1.1-testing]

No need to have this in the image, eating up precious code-space.
The byte holding the packet size is now initialized from PRERAP.

CAUTION:
This is a testbuild !
AirBoot uses the BIOS to access disks and a small coding error can trash
partition tables or other vital disk structures. You are advised to make
backups of TRACK0 and EBRs before using this testbuild. More info at:
​https://rousseaux.github.io/netlabs.air-boot/pdf/AirBoot-v1.1.0-manual.pdf

File:

• trunk/bootcode/airboot.asm (modified) (1 diff)

trunk/bootcode/airboot.asm

@@ -2351 +2351 @@
 
 ; -----------------------------------------------------------------------------
-;                                                                  I13X BUFFER
-; -----------------------------------------------------------------------------
+;                                                                   INT13X DAP
+; -----------------------------------------------------------------------------
+
+; Disk Address Package that holds information for LBA-access using INT13X
+INT13X_DAP                  db      ?       ; Size of paket, inserted by code
+                            db      ?       ; Reserved
+INT13X_DAP_NumBlocks        dw      ?       ; Number of blocks
+INT13X_DAP_Transfer         dd      ?       ; Transfer Adress
+INT13X_DAP_Absolute         dd      ?       ; Absolute Sector
+                            dd      ?       ; Second Part of QWORD
+INT13X_DAP_Size = $-offset [INT13X_DAP]     ; Calculated size
+
 ;
 ; BOOKMARK: Temporary buffer for 48h INT13X bios call.