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