Changeset 609 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS_Configurator_v2/Src

Timestamp:

May 21, 2021, 11:36:47 PM (4 years ago)

Author:

Krister Nordvall

Message:

Changes:

• Added autodetection of Arco Computer Products AC-1075 / AC-1070 controllers to XTIDECFG. These are MCA bus controllers and probably rare as hens teeth but apparently compatible with XUB as one person has confirmed using an AC-1075 as a regular 16-bit IDE controller. The port ranges used by these controllers are not used by anything else according to RBIL so autodetection should be fairly safe.

File:

• trunk/XTIDE_Universal_BIOS_Configurator_v2/Src/IdeAutodetect.asm (modified) (6 diffs)

trunk/XTIDE_Universal_BIOS_Configurator_v2/Src/IdeAutodetect.asm

@@ -99 +99 @@
 ;--------------------------------------------------------------------
 DetectPortMappedDeviceFromPortDX:
+    mov     si, dx
+    mov     bx, STATUS_REGISTER_in | (ALTERNATE_STATUS_REGISTER_in << 8)
+    ; *** Try to detect AC-1075 / AC-1070 controllers ***
+    cmp     dh, 25h
+    jne     SHORT .NotArcoComputerProducts
+    add     si, BYTE 8                  ; Add control block offset
+    call    DetectIdeDeviceFromPortsDXandSIwithOffsetsInBLandBH
+    mov     al, DEVICE_16BIT_ATA
+    ret
+.NotArcoComputerProducts:
     ; *** Try to detect Standard 16- and 32-bit IDE Devices ***
     mov     al, DEVICE_16BIT_ATA        ; Assume 16-bit ISA slot for AT builds
@@ -105 +115 @@
 
     ; Start with standard Control Block base port used by Primary and Secondary IDE
-    mov     si, dx
     add     si, STANDARD_CONTROL_BLOCK_OFFSET
-    mov     bx, STATUS_REGISTER_in | (ALTERNATE_STATUS_REGISTER_in << 8)
 .RedetectTertiaryOrQuaternaryWithDifferentControlBlockAddress:
     push    ax                          ; Store device type
@@ -120 +128 @@
     call    ChangeControlBlockAddressInSI
     jz      SHORT .RedetectTertiaryOrQuaternaryWithDifferentControlBlockAddress
-
 
     ; Detect 8-bit devices only if MODULE_8BIT_IDE is available
@@ -258 +265 @@
     ; Fall to .TrySecondAlternative
 .TrySecondAlternative:
-    sub     si, BYTE 8h     ; 368h to 360h, 3E8h to 3E0h
-    cmp     sp, sp          ; Set ZF
+    lea     si, [si-8]      ; 368h to 360h, 3E8h to 3E0h
 .Return:
     ret
@@ -284 +290 @@
 .CompareNextIdeBasePort:
     cmp     [cs:si], dx
-    lea     si, [si+2]  ; Increment SI and preserve FLAGS
+    lea     si, [si+2]          ; Increment SI and preserve FLAGS
     jne     SHORT .CompareNextIdeBasePort
 
@@ -320 +326 @@
     dw      3C0h
     dw      3E0h
+    ; Arco Computer Products AC-1075 / AC-1070 (16-bit MCA IDE adapters with Control Block at +8 and no IRQ)
+    dw      2510h
+    dw      2520h
     ; Memory Segment Addresses
     dw      0C000h  ; JR-IDE/ISA