Improved SD Error Messaging

Convert SD error to NO MEDIA when initial command fails.

Doc/ChangeLog.txt

@@ -3,6 +3,7 @@ Version 2.9.2
 - PMS: Fixed DS1210-related issue resulting in "Invalid BIOS" errors
 - SCC: Support for SC126 motherboard
 - WBW: Enable Auto-CTS/DCD in SIO driver for pacing output data
+- WBW: Support missing pull-up resistors in SD driver (a common occurence)
 
 Version 2.9.1
 -------------

Source/HBIOS/sd.asm

@@ -756,12 +756,6 @@ SD_GEOM:
 ; (RE)INITIALIZE CARD
 ;
 SD_INITCARD:
-;
-	;; CLEAR OUT UNIT SPECIFIC DATA
-	;SD_DPTR(0)			; SET HL TO START OF UNIT DATA
-	;LD	BC,SD_UNITDATALEN
-	;XOR	A
-	;CALL	FILL
 ;
 	CALL	SD_CHKCD		; CHECK CARD DETECT
 	JP	Z,SD_NOMEDIA		; Z=NO MEDIA, HANDLE IF SO
@@ -777,7 +771,7 @@ SD_INITCARD1:
 ;
 	; PUT CARD IN IDLE STATE
 	CALL	SD_GOIDLE		; GO TO IDLE
-	RET	NZ			; ABORT IF FAILED
+	JP	NZ,SD_NOMEDIA		; CONVERT ERROR TO NO MEDIA
 ;
 SD_INITCARD2:
 	LD	(IY+SD_TYPE),SD_TYPESDSC	; ASSUME SDSC CARD TYPE
@@ -1155,13 +1149,11 @@ SD_GOIDLE1:
 	LD	A,$95			; CRC FOR GO_IDLE_STATE COMMAND IS $95
 	LD	(SD_CMDCRC),A		; SET CRC
 	CALL	SD_EXECCMDND		; EXECUTE COMMAND W/ NO DATA RETURNED
-
 	RET	NZ			; ABORT ON ERROR
 	LD	A,(SD_RC)		; GET CARD RESULT
 	DEC	A			; MAP EXPECTED $01 -> $00
-	RET	Z			; ALL IS GOOD, RETURN WITH Z=0 AND Z SET
-	LD	A,SD_STCMDERR		; SET COMMAND ERROR VALUE, NZ ALREADY SET
-	RET				; AND RETURN
+	RET	Z			; ALL IS GOOD, RETURN WITH A=0 AND Z SET
+	JP	SD_ERRCMD		; SET COMMAND ERROR VALUE
 ;
 ; INITIALIZE COMMAND BUFFER
 ; COMMAND BYTE IN ACCUM