Intel 80C186XL, 80C188XL user manual Index-6

INDEX

Polling, 8-1, 8-9 POPA instruction, A-1

Power consumption‚ reducing, 3-28 Power management, 5-10–5-14 Power management modes

and HALT bus cycles, 3-30 Powerdown mode, 7-2 Power-Save mode, 5-11–5-14, 7-2

and DRAM refresh rate, 5-13 and refresh interval, 7-7 control register, 5-12 entering, 5-11

exiting, 5-13

initialization code, 5-13–5-14 Power-Save Register, 5-12

Priority Mask register, 8-17, 8-18, 8-28 Processor control instructions, 2-27 Processor Status Word (PSW), 2-1, 2-7, 2-41

bits defined, 2-7, 2-9

flag storage formats, 2-19 reset status, 2-7

Program transfer instructions, 2-23–2-24 conditional transfers, 2-24, 2-26 interrupts, 2-26

iteration control, 2-25 unconditional transfers, 2-24

PUSH instruction, A-8 PUSHA instruction, A-1

Q

Queue status signals, 3-38

R

RCL instruction, A-10 RCR instruction, A-10

Read bus cycles‚ See Bus cycles

READY

and chip-selects, 6-15

and normally not-ready signal, 3-17–3-18 and normally ready signal, 3-16–3-17 and PCB accesses, 4-4

and wait states, 3-13–3-18 implementation approaches, 3-13 timing concerns, 3-17

Real, defined, 10-7

Real-time clock, code example, 9-17–9-20 Refresh address, 7-4

Index-6

Refresh Base Address Register (RFBASE), 7-8 Refresh bus cycle‚ See Bus cycles

Refresh Clock Interval Register (RFTIME), 7-7, 7-8

Refresh Control Register (RFCON), 7-9, 7-10 Refresh Control Unit (RCU), 7-1–7-13

and bus hold protocol, 7-12–7-13 and Powerdown mode, 7-2

and Power-Save mode, 7-2, 7-7 block diagram, 7-1

bus latency, 7-7

calculating refresh interval, 7-7 control registers, 7-7–7-10 initialization code, 7-10 operation, 7-2

overview, 7-2–7-4 programming, 7-7–7-11 relationship to BIU, 7-1

Register operands, 2-27 Registers, 2-1

control, 2-1 data, 2-4, 2-5 general, 2-1, 2-4, 2-5 H & L group, 2-4 index, 2-5, 2-13, 2-34 P & I group, 2-4 pointer, 2-1, 2-5, 2-13 pointer and index, 2-4 segment, 2-1, 2-5, 2-11, 2-12 status, 2-1

Relocation Register‚ See PCB Relocation Register Reset

and bus hold protocol, 5-6

and clock synchronization, 5-6–5-10 cold, 5-7, 5-8

RC circuit for reset input, 5-7 warm, 5-7, 5-9

ROL instruction, A-10 ROR instruction, A-10

S

SAL instruction, A-9

SAR instruction, A-9

SHL instruction, A-9

Short integer, defined, 10-7

Short real, defined, 10-7

SHR instruction, A-9