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32886: Reset EAR bit, wait for interrupt then set EAR bit
Used by the routine at 32694.
32886 XOR A Reset all bits of Port 254 (including EAR bit)...
32887 OUT (254),A ...
32889 HALT Wait for interrupt
32890 LD A,16 Set EAR bit of Port 254...
32892 OUT (254),A ...
32894 RET Return
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