Fix forgotten SetTarget call in LBA read/write/verify/seek

As the memory used to implement these calls is already completely used
on the 2840 BIOS, adding "call SetTarget" requires to save three bytes,
that's why the code had to be shuffled (to eliminate one short JMP) and
another byte by using LODSW to transfer data from [SI] to AX.

Author: karcherm

274x-211.asm

@@ -15,7 +15,7 @@ VersionOfs          = 18D8h
 
 PATCH_VERSION   MACRO
         ;db     "Release"
-        db      "EDD 1.0"
+        db      "EDD 1.1"
                 ENDM
 
 INCLUDE aic7770.asm

284x-101.asm

@@ -13,7 +13,7 @@ VersionOfs          = 40A4h
 
 PATCH_VERSION   MACRO
         ;db     "/2842VL BIOS v1.01 "
-        db      " BIOS v1.01/EDD 1.0"
+        db      " BIOS v1.01/EDD 1.1"
                 ENDM
 
 INCLUDE aic7770.asm

284x-200.asm

@@ -13,7 +13,7 @@ VersionOfs          = 4068h
 
 PATCH_VERSION   MACRO
         ;db     "/2842VL BIOS v1.01 "
-        db      " BIOS v2.0/EDD 1.0 "
+        db      " BIOS v2.0/EDD 1.1 "
                 ENDM
 
 INCLUDE aic7770.asm

aic7770.asm

@@ -203,6 +203,19 @@ go_on:
         jmp     I13FinishWithAH
 
         org     MyInt15Ofs
+I13E_seek:
+        test    byte ptr [bp+BIOSFlags], BF_IgnoreSeek  ; TEST always clears CF
+        jnz     return_ok
+        mov     cx, 082Bh
+        jmp     I13E_common
+I13E_read:
+        mov     cx, 0028h
+        jmp     I13E_common_stc
+I13E_write:
+        mov     cx, 002Ah
+        jmp     I13E_common_stc
+I13E_verify:
+        mov     cx, 082Fh
 I13E_common_stc:
         stc
 I13E_common:
@@ -218,17 +231,19 @@ I13E_common:
         add     ax, ax
         mov     word ptr [bp+TransferLenLow + 1], ax ; transfer length
         ; set LBA (bswapping it)
-        mov     ax, es:[si+8]
+        add     si, 8
+        lods    [WORD PTR es:si]                     ; offset 8, si=+10
         xchg    ah, al
         mov     word ptr [bp+CDBdata + 4], ax
-        mov     ax, es:[si+10]
+        lods    [WORD PTR es:si]                     ; offset 10, si=+12
         xchg    ah, al
         mov     word ptr [bp+CDBdata + 2], ax
         test    [bp+VDSFlags], IsNoData
         jnz     no_data
-        les     bx, es:[si+4]
+        les     bx, es:[si-12+4]                     ; offset 4, correct for si change
         call    SetDataAddress
 no_data:
+        call    SetTarget
         call    ExecuteCommand
         cmp     ah, 1                   ; unsupported command
         jne     usual_case
@@ -241,21 +256,6 @@ usual_case:
         jmp     I13FinishWithAH
 
 
-I13E_read:
-        mov     cx, 0028h
-        jmp     I13E_common_stc
-I13E_write:
-        mov     cx, 002Ah
-        jmp     I13E_common_stc
-I13E_verify:
-        mov     cx, 082Fh
-        jmp     I13E_common_stc
-I13E_seek:
-        test    byte ptr [bp+BIOSFlags], BF_IgnoreSeek  ; TEST always clears CF
-        jnz     return_ok
-        mov     cx, 082Bh
-        jmp     I13E_common
-
         org     VersionOfs
         PATCH_VERSION