Changeset 76 for trunk/bootcode/airboot.asm

Timestamp:

Apr 8, 2017, 12:26:11 AM (8 years ago)

Author:

Ben Rietbroek

Message:

Removed the ancient 'ReleaseCode' conditional [v1.1.1-testing]

This was used in pre v1.07 versions to create a DOS .COM executable
for debugging. It has never been used in v1.07+ versions and debugging
is now done using the serial port from native AirBoot. Time to get rid
of this unused stuff.

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) (5 diffs)

trunk/bootcode/airboot.asm

@@ -94 +94 @@
 ENDIF
 
-;
-; If ReleaseCode is not defined, it will produce debug-able code...
-; Rousseau: This is currently *not* functional so don't use it !
-;           It was used to debug AiR-BOOT as a .COM file.
-;
-ReleaseCode             equ     -1
 
 
@@ -133 +127 @@
 ; -----------------------------------------------------------------------------
 ; Address labels after code-move
-BootBaseSeg                 equ     08000h   ; Pre-boot, in the low 640K
-BootBasePtr                 equ         0h   ; We put our MBR to this location
+BootBaseSeg                 equ     08000h  ; Pre-boot, in the low 640K
+BootBasePtr                 equ         0h  ; We put our MBR to this location
 BootBaseExec                equ     BootBasePtr+offset MBR_RealStart
-StackSeg                    equ     07000h   ; Put the stack below the code
-
-; Use different addresses depending on whether in pre-boot
-; or debug (dos) environment.
-IFDEF ReleaseCode
-    StartBaseSeg    equ     00000h  ; Pre-boot, we are in low memory
-    StartBasePtr    equ     07C00h  ; BIOS starts our MBR at 0:7C00
-ELSE
-    ; Rousseau: where does this value come from ?
-    ; Should be CS.
-    ; Rectified in actual code by ignoring this value.
-    StartBaseSeg    equ     03A98h  ; Adjust to DOS segment
-    StartBasePtr    equ     00100h  ; We are a .COM file, DOS is active
-ENDIF
+StackSeg                    equ     07000h  ; Put the stack below the code
+StartBaseSeg                equ     00000h  ; Pre-boot, we are in low memory
+StartBasePtr                equ     07C00h  ; BIOS starts our MBR at 0:7C00
 
 
@@ -546 +529 @@
                 ;sti
 
-            ; Depending on pre-boot or debug.
-            ; Note that ReleaseCode is obsolete, so we will always move
-            ; 256 words; aka this sector, the MBR.
-            IFDEF ReleaseCode
+                ; Size of the MBR in words.
                 mov     cx, 256          ; Pre-boot environment
-            ELSE
-                mov     cx, 32700        ; Old Debug environment (move ~64kB)
-            ENDIF
 
                 ;
@@ -732 +709 @@
                 push    bx      ; Old SP
 
-
-            ; If we are in debug-mode, all code is moved already,
-            ; so we can directly jump to it.
-            ; One difference is that in debug-mode, the whole .com image is
-            ; loaded by dos while when air-boot is active from the MBR it
-            ; does the loading itself.
-            ; (This debug environment is obsolete and dis-fuctional)
-            IFNDEF ReleaseCode
-                jmp     AiR_BOOT_Start
-            ENDIF
 
                 ; Load the configuration-sectors from disk.
@@ -1428 +1395 @@
                 call    PASSWORD_AskChangeBootPwd
 
-            IFNDEF ReleaseCode
-                ; Debug Code to terminate DOS .COM program - used for
-                ;  testing AiR-BOOT
-                ; Obsolete.
-                int     3
-                mov     ax, 6200h
-                int     21h
-                mov     es, bx
-                mov     ax, 4C00h    ; Quit program
-                int     21h
-            ENDIF
                 call    ANTIVIR_SaveBackUpMBR