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      <h1> words/1ms.asm </h1>

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      <pre>
; ( -- ) Time
; R(--)
; busy waits (almost) exactly 1 millisecond
VE_1MS:
    .db $03, &quot;1ms&quot;
    .dw VE_HEAD
    .set VE_HEAD = VE_1MS
XT_1MS:
    .dw PFA_1MS
    ; error: the additional instructions need appr.
    ;        4 cpu cycles, Z should be decreased by 1 or 2
PFA_1MS:
    .set delay_cycles = cpu_frequency / 1000
    ldi zl, LOW( delay_cycles / 4 )
    ldi zh, HIGH(delay_cycles / 4 )
    sbiw zl, 42 ; internal plus forth kernel overhead
PFA_1MS1:
    sbiw zl, 1
    brne PFA_1MS1
    rjmp DO_NEXT

; : ms 0 do 1ms loop ;
</pre>

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