Changeset 165 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h.asm

Timestamp:

Aug 20, 2011, 6:37:44 PM (13 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Hopefully this commit is successful. Sorry for the mess.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h.asm

@@ -33 +33 @@
 
     ; Jump to correct BIOS function
-    cmp     ah, 25h                     ; Valid BIOS function?
-    ja      SHORT Int13h_UnsupportedFunction
     eMOVZX  bx, ah
     shl     bx, 1
+    cmp     ah, 25h                     ; Possible EBIOS function?
+    ja      SHORT .JumpToEbiosFunction
     jmp     [cs:bx+g_rgw13hFuncJump]    ; Jump to BIOS function
+
+    ; Jump to correct EBIOS function
+ALIGN JUMP_ALIGN
+.JumpToEbiosFunction:
+    test    BYTE [cs:ROMVARS.wFlags], FLG_ROMVARS_FULLMODE  ; Full mode?
+    jz      SHORT Int13h_UnsupportedFunction
+    test    BYTE [di+DPT.bFlagsLow], FLG_DRVNHEAD_LBA       ; LBA supported?
+    jz      SHORT Int13h_UnsupportedFunction
+    cmp     ah, 48h                     ; Above last valid function?
+    ja      SHORT Int13h_UnsupportedFunction
+    sub     bx, 41h<<1                  ; BX = Offset to EBIOS jump table
+    jl      SHORT Int13h_UnsupportedFunction
+    jmp     [cs:bx+g_rgwEbiosFunctionJumpTable]
 
 
@@ -227 +240 @@
     dw  AH24h_HandlerForSetMultipleBlocks               ; 24h, Set Multiple Blocks (PS/1)
     dw  AH25h_HandlerForGetDriveInformation             ; 25h, Get Drive Information (PS/1)
-;   dw  Int13h_UnsupportedFunction                      ; 26h,
-;   dw  Int13h_UnsupportedFunction                      ; 27h,
-;   dw  Int13h_UnsupportedFunction                      ; 28h,
-;   dw  Int13h_UnsupportedFunction                      ; 29h,
-;   dw  Int13h_UnsupportedFunction                      ; 2Ah,
-;   dw  Int13h_UnsupportedFunction                      ; 2Bh,
-;   dw  Int13h_UnsupportedFunction                      ; 2Ch,
-;   dw  Int13h_UnsupportedFunction                      ; 2Dh,
-;   dw  Int13h_UnsupportedFunction                      ; 2Eh,
-;   dw  Int13h_UnsupportedFunction                      ; 2Fh,
-;   dw  Int13h_UnsupportedFunction                      ; 30h,
-;   dw  Int13h_UnsupportedFunction                      ; 31h,
-;   dw  Int13h_UnsupportedFunction                      ; 32h,
-;   dw  Int13h_UnsupportedFunction                      ; 33h,
-;   dw  Int13h_UnsupportedFunction                      ; 34h,
-;   dw  Int13h_UnsupportedFunction                      ; 35h,
-;   dw  Int13h_UnsupportedFunction                      ; 36h,
-;   dw  Int13h_UnsupportedFunction                      ; 37h,
-;   dw  Int13h_UnsupportedFunction                      ; 38h,
-;   dw  Int13h_UnsupportedFunction                      ; 39h,
-;   dw  Int13h_UnsupportedFunction                      ; 3Ah,
-;   dw  Int13h_UnsupportedFunction                      ; 3Bh,
-;   dw  Int13h_UnsupportedFunction                      ; 3Ch,
-;   dw  Int13h_UnsupportedFunction                      ; 3Dh,
-;   dw  Int13h_UnsupportedFunction                      ; 3Eh,
-;   dw  Int13h_UnsupportedFunction                      ; 3Fh,
-;   dw  Int13h_UnsupportedFunction                      ; 40h,
-;   dw  Int13h_UnsupportedFunction                      ; 41h, Check if Extensions Present (EBIOS)*
-;   dw  Int13h_UnsupportedFunction                      ; 42h, Extended Read Sectors (EBIOS)*
-;   dw  Int13h_UnsupportedFunction                      ; 43h, Extended Write Sectors (EBIOS)*
-;   dw  Int13h_UnsupportedFunction                      ; 44h, Extended Verify Sectors (EBIOS)*
-;   dw  Int13h_UnsupportedFunction                      ; 45h, Lock and Unlock Drive (EBIOS)***
-;   dw  Int13h_UnsupportedFunction                      ; 46h, Eject Media Request (EBIOS)***
-;   dw  Int13h_UnsupportedFunction                      ; 47h, Extended Seek (EBIOS)*
-;   dw  Int13h_UnsupportedFunction                      ; 48h, Get Extended Drive Parameters (EBIOS)*
+
+g_rgwEbiosFunctionJumpTable:
+    dw  AH41h_HandlerForCheckIfExtensionsPresent        ; 41h, Check if Extensions Present (EBIOS)*
+    dw  AH42h_HandlerForExtendedReadSectors             ; 42h, Extended Read Sectors (EBIOS)*
+    dw  AH43h_HandlerForExtendedWriteSectors            ; 43h, Extended Write Sectors (EBIOS)*
+    dw  AH44h_HandlerForExtendedVerifySectors           ; 44h, Extended Verify Sectors (EBIOS)*
+    dw  Int13h_UnsupportedFunction                      ; 45h, Lock and Unlock Drive (EBIOS)***
+    dw  Int13h_UnsupportedFunction                      ; 46h, Eject Media Request (EBIOS)***
+    dw  AH47h_HandlerForExtendedSeek                    ; 47h, Extended Seek (EBIOS)*
+    dw  AH48h_HandlerForGetExtendedDriveParameters      ; 48h, Get Extended Drive Parameters (EBIOS)*
 ;   dw  Int13h_UnsupportedFunction                      ; 49h, Get Extended Disk Change Status (EBIOS)***
 ;   dw  Int13h_UnsupportedFunction                      ; 4Ah, Initiate Disk Emulation (Bootable CD-ROM)