Screen 0 not modified     
 0 \                                                 ks 22 dez 87  
 1                                                                 
 2 The timer utilizes the memory cell at $46C that is incremented  
 3 by an interrupt. A couple of words allow this timer to be       
 4 used for time delays.                                           
 5                                                                 
 6 time-of-day and date are accessed via MS-DOS calls.             
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Screen 1 not modified     
 0 \ BIMomat BIOS Timer                              ks 03 apr 88  
 1   Onlyforth \needs Assembler    2 loadfrom asm.scr              
 2                                                                 
 3   $46C >label Counter                                           
 4                                                                 
 5 \ 1193180 / 65536 = 18,206 Hz                                   
 6                                                                 
 7   1 2 +thru  .( Timer geladen) cr                               
 8                                                                 
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Screen 2 not modified     
 0 \ BIMomat BIOS Timer                              ks 22 dez 87  
 1                                                                 
 2   Code ticks ( -- n )   D push   D: C mov   A A xor             
 3      A D: mov   Counter #) D mov   C D: mov   Next   end-code   
 4                                                                 
 5   : timeout? ( ticks -- ticks f )  pause dup ticks - 0< ;       
 6                                                                 
 7   : till     ( n -- )        BEGIN  timeout? UNTIL  drop ;      
 8                                                                 
 9   : time     ( n -- time )   ticks + ;                          
10                                                                 
11   : wait     ( n -- )        time till ;                        
12                                                                 
13   : seconds  ( sec -- ticks )  &18206 &1000 */ ;                
14                                                                 
15   : minutes  ( min -- ticks )  &1092 * ;                        
Screen 3 not modified     
 0 \ MS-DOS time and date                            ks 22 dez 87  
 1                                                                 
 2   Code date@  ( -- dd mm yy )                                   
 3      D push   $2A # A+ mov   $21 int   A A xor   D+ A- xchg     
 4      D push   A push   C D mov   &1900 # D sub   Next           
 5   end-code                                                      
 6                                                                 
 7   Code time@  ( -- ss mm hh )                                   
 8      D push   $2C # A+ mov   $21 int   D+ D- mov   0 # D+ mov   
 9      D push   D+ D- mov   C+ D- xchg   C push   Next            
10   end-code                                                      
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Screen 4 not modified     
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