Changeset 73

Timestamp:

Apr 8, 2017, 12:26:09 AM (8 years ago)

Author:

Ben Rietbroek

Message:

Merged some syntax changes from different local branch [v1.1.1-testing]

Ultimately we want to use '[identifier]' in all instructions that do
memory references, so there is a clear distinction between those and
immediate values.

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

Location:

trunk/bootcode/regular

Files:

• bootmenu.asm (modified) (7 diffs)
• partmain.asm (modified) (1 diff)

trunk/bootcode/regular/bootmenu.asm

@@ -511 +511 @@
    local PartPointer:word
 
-   call    PART_GetPartitionPointer      ; Gets pointer to partition (DL) -> SI
-   mov     PartPointer, si
+   call    PART_GetPartitionPointer     ; Gets pointer to partition (DL) -> SI
+   mov     [PartPointer], si            ; SI now points to the IPT-entry
 
    ; === Display Boot-Number ===
@@ -545 +545 @@
    mov     cx, CLR_HD_INDEX
    call    VideoIO_Color                 ; Violet, blue
-   mov     si, PartPointer
+   mov     si, [PartPointer]
    mov     al, [si+LocIPT_Drive]
    sub     al, 7Fh                       ; Will only display numbers up to 99,
@@ -577 +577 @@
       mov     al, '/'
       call    VideoIO_PrintSingleChar
-      mov     cx, CLR_HD_SIZE_BM
+      mov     cx, CLR_HD_SIZE
       call    VideoIO_Color              ; Violet, Blue
-      mov     ax, PartPointer            ; Get Size-Element from PartPtr (AX)
+      mov     ax, [PartPointer]            ; Get Size-Element from PartPtr (AX)
       call    PART_GetSizeElementPointer ; DS:SI -> Size-Element...
       mov     cl, 4
@@ -608 +608 @@
    mov     cx, CLR_LABEL
    call    VideoIO_Color                 ; Yellow, blue
-   mov     si, PartPointer
+   mov     si, [PartPointer]
    add     si, LocIPT_Name
    mov     cl, 11
@@ -620 +620 @@
 
    call    VideoIO_Locate
-   mov     si, PartPointer
+   mov     si, [PartPointer]
    mov     al, [si+LocIPT_SystemID]
    call    PART_SearchFileSysName
@@ -731 +731 @@
 
         call    LVM_GetDriveLetter
+IF 0
+                ; Print values at start of LVM-record
+                pushf
+                pusha
+                mov     si, offset [LVMSector]
+                lodsw
+                call    VideoIO_PrintHexWord
+                lodsw
+                call    VideoIO_PrintHexWord
+                popa
+                popf
+ENDIF
+        jnc     skip_show_dl
 
         test    al,al
@@ -972 +985 @@
         mov     dl, Menu_EntryLast
     BMRMV_TimedBootDefault:
-        call    PART_GetPartitionPointer      ; Holt SI fr Partition DL
+        call    PART_GetPartitionPointer      ; Hold SI for Partition DL
         add     si, LocIPT_Name
         mov     cx, 11

trunk/bootcode/regular/partmain.asm

@@ -2267 +2267 @@
 
     next_pe:
-        ; Computer pointer to PE
+        ; Compute pointer to PE
         mov      bx,dx          ; Point BX to 1st partition address
         mov      ax,cx          ; Get PE-index