Changeset 186 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Boot

Timestamp:

Nov 15, 2011, 10:35:17 AM (13 years ago)

Author:

gregli@…

google:author:

gregli@hotmail.com

Message:

Initial string compression checkin. All changes are under MODULE_STRINGS_COMPRESSED, and this can still be turned off. With this checkin, the serial and ebios code can both be turned on at the same time and still we remain below the 8K boundary (barely). I still need to chekin StringsCompress.pl after some more code cleanup. The output, in StringsCompressed.asm is checked in here, and should continue be to checkin when Strings.asm is changed, for those who do not have/want to run the Perl script to recreate it.

Location:

trunk/XTIDE_Universal_BIOS/Src/Boot

Files:

• BootMenuPrint.asm (modified) (2 diffs)
• BootMenuPrintCfg.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenuPrint.asm

@@ -66 +66 @@
 ;       CF:     Set since menu event was handled successfully
 ;   Corrupts registers:
-;       AX
+;       AX, DI
 ;--------------------------------------------------------------------
 ALIGN JUMP_ALIGN
 BootMenuPrint_NullTerminatedStringFromCSSIandSetCF:
-    push    di
-    CALL_DISPLAY_LIBRARY PrintNullTerminatedStringFromCSSI
-    pop     di
-    stc
-    ret
-
+;
+; We send all CSSI strings through the Format routine for the case of
+; compressed strings, but this doesn't hurt in the non-compressed case either
+; (perhaps a little slower, but shouldn't be noticeable to the user)
+; and results in smaller code size.
+;
+    push    bp
+    mov     bp,sp
+    jmp     BootMenuPrint_FormatCSSIfromParamsInSSBP
 
 ;--------------------------------------------------------------------
@@ -229 +232 @@
     cmp     bl, FLOPPY_TYPE_525_HD
     ja      .ThreeHalf
+%if g_szFddThreeFive_Displacement = 2       
+    inc     ax                      ; compressed string case
+    inc     ax
+%else
     add     ax, g_szFddThreeFive_Displacement
+%endif
 .ThreeHalf:     
     push    ax                      ; "5 1/4" or "3 1/2"

trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenuPrintCfg.asm

@@ -21 +21 @@
 ALIGN JUMP_ALIGN
 BootMenuPrintCfg_ForOurDrive:
-    pop     di
     mov     si, g_szCfgHeader
     call    BootMenuPrint_NullTerminatedStringFromCSSIandSetCF
+    pop     di
     eMOVZX  ax, BYTE [di+DPT.bIdevarsOffset]
     xchg    si, ax                      ; CS:SI now points to IDEVARS
@@ -91 +91 @@
     mov     al,g_szBusTypeValues_Displacement
     mul     BYTE [cs:si+IDEVARS.bDevice]
-    shr     ax,1
+        
+    shr     ax,1            ; divide by 2 since IDEVARS.bDevice is multiplied by 2
+        
     add     ax,g_szBusTypeValues
     push    ax