Changeset 196 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Initialization/DetectPrint.asm

Timestamp:

Nov 19, 2011, 11:18:39 AM (12 years ago)

Author:

gregli@…

google:author:

gregli@hotmail.com

Message:

Added printing of COM port and baud rate, when set explicitly by idecfg. Although it eats some bytes, I think it is worth it, since the BIOS will be looking for a server on a particular com port and baud rate, and it could be hard to troubleshoot a mismatch without this information. However, if we become space crunched, this change can be backed out.

File:

• trunk/XTIDE_Universal_BIOS/Src/Initialization/DetectPrint.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Initialization/DetectPrint.asm

@@ -36 +36 @@
 ;       Nothing
 ;   Corrupts registers:
-;       AX, SI, DI
+;       AX, SI, DI, CX
 ;--------------------------------------------------------------------
 DetectPrint_StartDetectWithMasterOrSlaveStringInAXandIdeVarsInCSBP:
     push    bp
     mov     di, [cs:bp+IDEVARS.wPort]
+%ifdef MODULE_SERIAL
+    mov     cx, [cs:bp+IDEVARS.wSerialPackedPrintBaud]
+%endif
+        
     mov     bp, sp
-    push    ax                          ; Push "Master" or "Slave"
-    push    di                          ; Push port number
-    jmp     DetectPrint_BootMenuPrint_FormatCSSIfromParamsInSSBP_Relay
+
+    push    ax                          ; Push "Master" or "Slave"
+        
+    push    di                          ; Push Port address or COM port number
+
+%ifdef MODULE_SERIAL
+;
+; Baud rate is packed into one word:
+;    High order 6 bits: number to add to '0' to get postfix character ('0' or 'K')
+;    Low order 10 bits: binary number to display (960, 240, 38, or 115)
+;          To get 9600: '0'<<10 + 960
+;          To get 2400: '0'<<10 + 240
+;          To get 38K:  ('K'-'0')<<10 + 38
+;          To get 115K: ('K'-'0')<<10 + 115
+;
+    mov     ax,cx                       ; Unpack baud rate number
+    and     ax,03ffh
+    push    ax
+
+    mov     al,ch                       ; Unpack baud rate postfix ('0' or 'K')
+    eSHR_IM al,2
+    add     al,'0'
+    push    ax
+%endif
+                        
+    jmp     short DetectPrint_BootMenuPrint_FormatCSSIfromParamsInSSBP_Relay    
 
 
@@ -70 +97 @@
 
 
-;--------------------------------------------------------------------
-; DetectPrint_DriveNotFound
-;   Parameters:
-;       Nothing
-;   Returns:
-;       Nothing
-;   Corrupts registers:
-;       AX, SI
-;--------------------------------------------------------------------
-DetectPrint_DriveNotFound:
-    mov     si, g_szNotFound
-    jmp     BootMenuPrint_NullTerminatedStringFromCSSIandSetCF
+