Changeset 80

Timestamp:

Apr 8, 2017, 12:26:17 AM (8 years ago)

Author:

Ben Rietbroek

Message:

I knew there were a few stealhy ones... [v1.1.1-testing]

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/special/virus.asm (modified) (4 diffs)

trunk/bootcode/special/virus.asm

@@ -153 +153 @@
    pop     es
    mov     bx, offset TmpSector
-   mov     dx, 0080h
+   mov     dh, 0                 ; Head 0
+   mov     dl, [BIOS_BootDisk]   ; Disk AirBoot was loaded from
    mov     cx, 0001h  ; Harddisc 0, Sector 1
    mov     ax, 0201h
@@ -180 +181 @@
    pop     es
    mov     bx, BootBasePtr
-   mov     dx, 0080h
+   mov     dh, 0                 ; Head 0
+   mov     dl, [BIOS_BootDisk]   ; Disk AirBoot was loaded from
    ;mov     cx, 003Ch                     ; First Harddrive, Sector 60
    mov     cx, image_size / sector_size  ; Harddisc 0, Sector 60 (or 62 for extended version)
@@ -195 +197 @@
    pop     ds
    mov     bx, offset TmpSector
-   mov     dx, 0080h
+   mov     dh, 0                 ; Head 0
+   mov     dl, [BIOS_BootDisk]   ; Disk AirBoot was loaded from
    ;mov     cx, 003Ch                     ; Harddisc 0, Sector 60
    mov     cx, image_size / sector_size  ; Harddisc 0, Sector 60 (or 62 for extended version)
@@ -220 +223 @@
   ARMBR_DoIt:
    mov     bx, offset TmpSector
-   mov     dx, 0080h
+   mov     dh, 0                 ; Head 0
+   mov     dl, [BIOS_BootDisk]   ; Disk AirBoot was loaded from
    mov     cx, 0001h                     ; Harddisc 0, Sector 1
    mov     ax, 0301h                     ; Write 1 Sector