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Annotation of qemu/roms/SLOF/board-js2x/slof/serial.fs, revision 1.1.1.1

1.1       root        1: \ *****************************************************************************
                      2: \ * Copyright (c) 2004, 2008 IBM Corporation
                      3: \ * All rights reserved.
                      4: \ * This program and the accompanying materials
                      5: \ * are made available under the terms of the BSD License
                      6: \ * which accompanies this distribution, and is available at
                      7: \ * http://www.opensource.org/licenses/bsd-license.php
                      8: \ *
                      9: \ * Contributors:
                     10: \ *     IBM Corporation - initial implementation
                     11: \ ****************************************************************************/
                     12: 
                     13: 
                     14: \ Serial console.  Enabled very early.
                     15: \ remember last console used
                     16: CREATE lastser 4 allot  0 lastser l!
                     17: 
                     18: \ On JS21, use serial port 2.  Detect Maui by looking at the SIO version.
                     19: 20 siocfg@ f2 = IF 2f8 ELSE 3f8 THEN
                     20: 
                     21: : >serial  LITERAL + ;
                     22: : js21?           -2f8 >serial 0= ;
                     23: : serial!  js21? IF 2dup 2f8 + io-c! THEN 3f8 + io-c! ;
                     24: : serial1@ 3f8 + io-c@ ;
                     25: : serial2@ 2f8 + io-c@ ;
                     26: 
                     27: : serial-init  0 1 serial!  0 2 serial!
                     28:                80 3 serial! d# 115200 swap / 0 serial!  0 1 serial!
                     29:                3 3 serial!  3 4 serial! ;
                     30: : serial-emit  BEGIN 5 serial1@ 20 and UNTIL  
                     31:               js21? IF BEGIN 5 serial2@ 20 and UNTIL THEN 0 serial! ;
                     32: : serial1-key? 5 serial1@ 1 and 0<> ;
                     33: : serial2-key? 5 serial2@ 1 and 0<> ;
                     34: : serial1-key  serial1-key? dup IF 0 serial1@ swap 0 lastser l! THEN ;
                     35: : serial2-key  serial2-key? dup IF 0 serial2@ swap 1 lastser l! THEN ;
                     36: : serial-key   BEGIN serial1-key dup IF ELSE js21? IF drop serial2-key THEN THEN UNTIL ;
                     37: : serial-key?  serial1-key? js21? IF serial2-key? or THEN ;
                     38: 
                     39: \ : serial-key   BEGIN 5 serial2@ 1 and UNTIL  0 serial2@ ;
                     40: \ : serial-key?  5 serial2@  1 and 0<> ;
                     41: 
                     42: d# 19200 serial-init
                     43: ' serial-emit to emit
                     44: ' serial-key  to key
                     45: ' serial-key? to key?
                     46: 
                     47: ( .( SLOF)
                     48: \ .(  has started execution, serial console @ ) 0 >serial .

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