Chapter 4. Interrupt Controller
34
Initialization Registers (ICW1-ICW4)
Each interrupt controller must be initialized before it is used. Initialization consists of writing two,
three, or four initialization commands. The programming sequence for these registers is given in the
"Interrupt Initialization Programming" figure. ICW1, ICW2, and ICW3 must be programmed during
each initialization sequence. ICW4 may or may not be programmed, as required by the application.
ICW1
BASE A0
BASE A1
ICW2
ICW3
BASE A1
BASE A1
ICW4
ICW1 BIT0=1
NO
YES
INITIALIZATION
COMPLETE
ZT8905F04-02
Interrupt Initialization Programming
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com
Содержание ZT 8905
Страница 13: ...Contents Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 15: ...Tables Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 163: ...Index xxxvi Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...
Страница 164: ...Artisan Technology Group Quality Instrumentation Guaranteed 888 88 SOURCE www artisantg com...