Changeset 613 in xtideuniversalbios for trunk/BIOS_Drive_Information_Tool/Src

Timestamp:

May 27, 2021, 6:25:17 PM (4 years ago)

Author:

Tomi Tilli

Message:

Added more complex way to limit illegal P-CHS Cylinders. This way more modifications can be easily made later if necessary.
Updated biosdrvs to display unmodified and modified CHS.

Location:

trunk/BIOS_Drive_Information_Tool/Src

Files:

• AtaInfo.asm (modified) (2 diffs)
• Bios.asm (modified) (2 diffs)
• Main.asm (modified) (2 diffs)
• Strings.asm (modified) (1 diff)

trunk/BIOS_Drive_Information_Tool/Src/AtaInfo.asm

@@ -36 +36 @@
 
     ; Read ATA Information from the drive
-    call    Bios_ReadAtaInfoFromDriveDLtoBX
+    call    Bios_ReadAtaInfoFromDriveDLtoBX ; Unaltered ATA information
     call    Print_ErrorMessageFromAHifError ; AH=25h is not available on many BIOSes
     jc      SHORT .SkipAtaInfoSinceError
@@ -44 +44 @@
 
     ; Print Drive P-CHS parameters
-    call    DisplayPCHSusingAtaInfoFromDSBX
+    call    DisplayPCHSusingAtaInfoFromDSBX ; Unaltered
+
+    ; Fix and display values (ATA Info will stay fixed)
+    xor     ah, ah                          ; Successfully read ATA ID
+    push    ds
+    pop     es
+    mov     si, bx
+    call    AtaID_FixIllegalValuesFromESSI  ; Modify ATA information if necessary
+    mov     si, g_szWillBeModified
+    call    Print_NullTerminatedStringFromSI
+    call    DisplayPCHSusingAtaInfoFromDSBX ; Display fixed values
 
     ; Print Drive CHS sector count

trunk/BIOS_Drive_Information_Tool/Src/Bios.asm

@@ -118 +118 @@
 ;               Set = BIOS error code stored in AH
 ;   Corrupts registers:
-;       ES
+;       CX, ES
 ;--------------------------------------------------------------------
 Bios_ReadAtaInfoFromDriveDLtoBX:
@@ -124 +124 @@
     push    ds
     pop     es
+    mov     cx, XUB_INT13h_SIGNATURE    ; Signature to read unaltered ATA ID
     mov     ah, GET_DRIVE_INFORMATION
     int     BIOS_DISK_INTERRUPT_13h

trunk/BIOS_Drive_Information_Tool/Src/Main.asm

@@ -25 +25 @@
 %include "Version.inc"          ; From XTIDE Universal BIOS
 %include "ATA_ID.inc"           ; From XTIDE Universal BIOS
+%include "Ramvars.inc"          ; From XTIDE Universal BIOS (needed by Int13h.inc)
 %include "Int13h.inc"           ; From XTIDE Universal BIOS
 %include "EBIOS.inc"            ; From XTIDE Universal BIOS
@@ -42 +43 @@
 ; Include library and other sources
 %include "AssemblyLibrary.asm"
+%include "AtaID.asm"            ; From XTIDE Universal BIOS
 %include "AtaGeometry.asm"      ; From XTIDE Universal BIOS
 %include "Strings.asm"

trunk/BIOS_Drive_Information_Tool/Src/Strings.asm

@@ -37 +37 @@
 g_szLBA:            db  "LBA   ",NULL
 g_szFormatCHS:      db  " Cylinders    : %5u, Heads: %3u, Sectors: %2u",NULL
+g_szWillBeModified: db  "Will be modified to:",CR,LF,NULL       
 g_szChsSectors:     db  " CHS   sectors: ",NULL
 g_szLBA28:          db  " LBA28 sectors: ",NULL