Changeset 199 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Initialization/DetectPrint.asm

Timestamp:

Nov 21, 2011, 11:01:08 AM (13 years ago)

Author:

gregli@…

google:author:

gregli@hotmail.com

Message:

Adding proper serial port support to the Configurator, which required some minor changes elsewhere. Also added an option, off by default, to automatically scan for serial drives at the end of normal drive detection (no ALT key required, although that is still available if the option is off).

File:

• trunk/XTIDE_Universal_BIOS/Src/Initialization/DetectPrint.asm (modified) (1 diff)

trunk/XTIDE_Universal_BIOS/Src/Initialization/DetectPrint.asm

@@ -53 +53 @@
 %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
-;
+; Print baud rate from .wSerialPackedPrintBaud, in two parts - %u and then %c
+; 
     mov     ax,cx                       ; Unpack baud rate number
-    and     ax,03ffh
+    and     ax,DEVICE_SERIAL_PRINTBAUD_NUMBERMASK
     push    ax
 
     mov     al,ch                       ; Unpack baud rate postfix ('0' or 'K')
-    eSHR_IM al,2
-    add     al,'0'
+    eSHR_IM al,2                        ; also effectively masks off the postfix
+    add     al,DEVICE_SERIAL_PRINTBAUD_POSTCHARADD
     push    ax
 %endif