Interrupt Enable 0 Register

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Revision as of 12:43, 14 October 2025 by Xalior (talk | contribs) (Xalior moved page Interrupt Enable 0 to Interrupt Enable 0 Register: match formal nextreg.txt name)
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Number TBRegisterNumber::$C4
Readable TBRegisterReadable::Yes
Writable TBRegisterWritable::Yes
Short Description ShortDesc::Interrupt type enable control 
 bit 7 = Expansion bus /INT (soft reset = 1)
 bits 6:2 = Reserved must be 0
 bit 1 = Line ** (soft reset = 0)
 bit 0 = ULA ** (soft reset = 1)
  • * If a device interrupt is disabled, it enters a polled mode
  • ** Aliases of interrupt enable bits in nextreg 0x22

Soft reset = 0x81

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