Changeset 588 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Inc/Controllers/XTCF.inc

Timestamp:

Jun 3, 2015, 12:30:54 PM (9 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Changes:

• Fixed a bug in AH24h_HSetBlocks.asm from r550. Trying to set a too large block size with an XT-CF card in DMA transfer mode would corrupt the stack.
• Fixed a bug from r545 where the list of devices under g_szDeviceTypeValues in Strings.asm was no longer up to date causing the boot menu to display the wrong string for devices numbered higher than DEVICE_8BIT_XTCF_PIO8.
• Made some fairly significant changes to the XT-CF code to reduce size. Two changes in functionality; 1) Added a simple check to validate the request for a change of the XT-CF transfer mode. 2) Changing transfer mode to use DMA no longer calls AH24h_SetBlockSize if the block size already is within the limits of DMA transfers. UNTESTED
• XTIDECFG now clears IDEVARS.bIRQ when changing IDE controller to a serial device to keep the boot menu from displaying it since the serial device doesn't use IRQs at all.
• Other minor optimizations.

File:

• trunk/XTIDE_Universal_BIOS/Inc/Controllers/XTCF.inc (modified) (1 diff)

trunk/XTIDE_Universal_BIOS/Inc/Controllers/XTCF.inc

@@ -54 +54 @@
 ;
 ; XT-CFv3 cannot be distinguished by software, so user must decide and set
-; the mode via a call to Int 13h function 1Eh accordingly (see AH1E_XTCF.asm).
+; the mode via a call to Int 13h function 1Eh accordingly (see AH1Eh_XTCF.asm).
 ;
-XTCF_8BIT_PIO_MODE                  EQU     ((DEVICE_8BIT_XTCF_PIO8 >> 1) - XTCF_DEVICE_OFFSET)
-XTCF_8BIT_PIO_MODE_WITH_BIU_OFFLOAD EQU     (XTCF_8BIT_PIO_MODE + 1)
-XTCF_16BIT_PIO_WITH_BIU_OFFLOAD     EQU     (XTCF_8BIT_PIO_MODE + 2)    ; Lo-tech 8-bit IDE Adapter
-XTCF_DMA_MODE                       EQU     (XTCF_8BIT_PIO_MODE + 3)
+XTCF_8BIT_PIO_MODE                  EQU     0   ; XT-CF using 8-bit PIO mode
+XTCF_8BIT_PIO_MODE_WITH_BIU_OFFLOAD EQU     1   ; XT-CF using 8-bit PIO mode, but with 16-bit instructions
+XTCF_16BIT_PIO_WITH_BIU_OFFLOAD     EQU     2   ; Lo-tech 8-bit IDE Adapter
+XTCF_DMA_MODE                       EQU     3   ; XT-CFv3 using DMA