Changeset 142 for trunk/bootcode/regular/other.asm

Timestamp:

Apr 8, 2017, 12:27:38 AM (8 years ago)

Author:

Ben Rietbroek

Message:

Moved the AuxIO initialization to an earlier stage [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/regular/other.asm (modified) (3 diffs)

trunk/bootcode/regular/other.asm

@@ -91 +91 @@
 IFDEF   AUX_DEBUG
         IF 1
-        DBG_TEXT_OUT_AUX    'PRECRAP_Main'
+        DBG_TEXT_OUT_AUX    'PRECRAP_Main:'
         PUSHRF
             ;~ call    DEBUG_DumpRegisters
@@ -158 +158 @@
         call    VideoIO_PrintBuildInfo
 
-    IFDEF   AUX_DEBUG
-        ; Initialize the com-port for debugging
-        call     AuxIO_Init
-    ENDIF
+; Show message if com-port debugging is active
+IFDEF   AUX_DEBUG
+        ; Don't show message if com-port debugging is not active
+        mov     dx, [BIOS_AuxParms]
+        test    dl, dl
+        jz      @F
+
+        ; Show initialization message
+        mov     si, offset AuxInitMsg
+        call    MBR_Teletype
+
+        ; Sync output position
+        call    VideoIO_SyncPos
+
+        ; Show port number
+        mov     al, dl
+        call    VideoIO_PrintByteDynamicNumber
+        xor     si, si
+        call    MBR_TeletypeNL
+    @@:
+ENDIF
 
         xor     si,si
@@ -181 +198 @@
         ;! was loaded from a disk where the MBR cannot be written !
         ;!
-
-
-IFDEF   AUX_DEBUG
-    IF 1
-    call     DEBUG_Dump1
-    ENDIF
-ENDIF