Changeset 601 in xtideuniversalbios for trunk/Assembly_Library/Src/Util

Timestamp:

Feb 14, 2019, 7:38:08 PM (6 years ago)

Author:

Krister Nordvall

Message:

Changes:

• Building the BIOS now works again.
• Added a new IDE device type/transfer mode for use only with XT-IDE rev 2+ (or Chuck(G)-modded rev 1) cards installed in any of the following machines: Olivetti M24, AT&T PC6300, Xerox 6060 and Logabax Persona 1600. This new transfer mode is slightly faster than the regular XT-IDE rev 1 device type and requires that the card is configured for High Speed mode (or, in case of the card being a rev 1 card, has the Chuck(G) mod done). The new device type is called "XTIDE rev 2 (Olivetti M24)" in XTIDECFG.
• Made some minor improvements to the library code that handles 'Drive Not Ready' errors in XTIDECFG.
• Optimizations.

File:

• trunk/Assembly_Library/Src/Util/CMOS.asm (modified) (1 diff)

trunk/Assembly_Library/Src/Util/CMOS.asm

@@ -131 +131 @@
 GetSumOfBytes10hto2DhtoCX:
     xor     cx, cx          ; Sum
-    mov     dx, 10h         ; First index
+    mov     dl, 10h         ; First index
+    xor     ah, ah
 
 .AddNextByte:
     call    CMOS_ReadFromIndexInDLtoAL
-    xor     ah, ah
     add     cx, ax
     inc     dx
     cmp     dl, 2Dh         ; Last index
-    jbe     .AddNextByte
+    jbe     SHORT .AddNextByte
     ret