Changeset 158 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/AccessDPT.asm

Timestamp:

May 2, 2011, 9:41:51 AM (13 years ago)

Author:

aitotat

google:author:

aitotat

Message:

Changes to XTIDE Universal BIOS:

• Optimized few bytes.

File:

• trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/AccessDPT.asm (modified) (4 diffs)

trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/AccessDPT.asm

@@ -34 +34 @@
 AccessDPT_GetDeviceControlByteToAL:
     xor     al, al
-    test    BYTE [di+DPT.wFlags], FLG_DPT_ENABLE_IRQ
+    test    BYTE [di+DPT.bFlagsLow], FLGL_DPT_ENABLE_IRQ
     jnz     SHORT .EnableDeviceIrq
     or      al, FLG_DEVCONTROL_nIEN ; Disable IRQ
@@ -52 +52 @@
 ALIGN JUMP_ALIGN
 AccessDPT_GetAddressingModeForWordLookToBX:
-    mov     bl, [di+DPT.wFlags]
-    and     bx, BYTE MASK_DPT_ADDRESSING_MODE
+    mov     bl, [di+DPT.bFlagsLow]
+    and     bx, BYTE MASKL_DPT_ADDRESSING_MODE
     eSHR_IM bx, ADDRESSING_MODE_FIELD_POSITION-1
     ret
@@ -72 +72 @@
 AccessDPT_GetLCHSfromPCHS:
     xchg    ax, cx
-    mov     cl, [di+DPT.wFlags]
-    and     cl, MASK_DPT_CHS_SHIFT_COUNT    ; Load shift count
+    mov     cl, [di+DPT.bFlagsLow]
+    and     cl, MASKL_DPT_CHS_SHIFT_COUNT   ; Load shift count
     mov     bx, [di+DPT.wPchsCylinders]     ; Load P-CHS cylinders
     shr     bx, cl                          ; Shift to L-CHS cylinders
@@ -115 +115 @@
     eMOVZX  bx, [di+DPT.bIdevarsOffset]         ; CS:BX points to IDEVARS
     add     bx, BYTE IDEVARS.drvParamsMaster    ; CS:BX points to Master Drive DRVPARAMS
-    test    BYTE [di+DPT.wFlags], FLG_DPT_SLAVE
+    test    BYTE [di+DPT.bFlagsLow], FLGL_DPT_SLAVE
     jz      SHORT .ReturnPointerToDRVPARAMS
     add     bx, BYTE DRVPARAMS_size             ; CS:BX points to Slave Drive DRVPARAMS