This is a collection of Intel®’ IA32® Software Developer's Manuals (URL of the day) and AMD' AMD64 Architecture Programmer's Manual together with the related specifications, application notes, white papers, and change logs. The collection aims to keep all available revisions. It was originally created by Michal Necasek, see OS/2 Museum.

If you have a public document, related to the IA32® specifications and missing from the collection, please mail it to me. The content of this URL and all sub-ULRs is available for convenient bulk download by rsync x86docs password "" (empty).

CTIAPPPULSE

CTIAPPPULSE, CTI Application Pulse register

The CTIAPPPULSE characteristics are:

Purpose

Causes event pulses to be generated on ECT channels.

Configuration

CTIAPPPULSE is in the Debug power domain.

Attributes

CTIAPPPULSE is a 32-bit register.

Field descriptions

31	30	29	28	27	26	25	24	23	22	21	20	19	18	17	16	15	14	13	12	11	10	9	8	7	6	5	4	3	2	1	0
APPPULSE31	APPPULSE30	APPPULSE29	APPPULSE28	APPPULSE27	APPPULSE26	APPPULSE25	APPPULSE24	APPPULSE23	APPPULSE22	APPPULSE21	APPPULSE20	APPPULSE19	APPPULSE18	APPPULSE17	APPPULSE16	APPPULSE15	APPPULSE14	APPPULSE13	APPPULSE12	APPPULSE11	APPPULSE10	APPPULSE9	APPPULSE8	APPPULSE7	APPPULSE6	APPPULSE5	APPPULSE4	APPPULSE3	APPPULSE2	APPPULSE1	APPPULSE0

APPPULSE<x>, bit [x], for x = 31 to 0

Generate event pulse on ECT channel <x>.

APPPULSE<x>	Meaning
0b0	No effect.
0b1	Channel <x> event pulse generated.

Note

The CTIAPPPULSE operation does not affect the state of the application trigger. If the channel is active, either because of an earlier event or from the application trigger, then the value written to CTIAPPPULSE might have no effect.
Multiple pulse events that occur close together might be merged into a single pulse event.

Accessing this field has the following behavior:

When x >= UInt(CTIDEVID.NUMCHAN), access to this field is RAZ/WI.
Otherwise, access to this field is WO/UNKNOWN.

Accessing CTIAPPPULSE

It is CONSTRAINED UNPREDICTABLE whether a write to CTIAPPPULSE generates an event on a channel if CTICONTROL.GLBEN is 0.

CTIAPPPULSE can be accessed through the external debug interface:

Component	Offset	Instance
CTI	0x01C	CTIAPPPULSE

Accessible as follows:

When SoftwareLockStatus(addrdesc), accesses to this register are WI.
Otherwise, accesses to this register are WO.

2026-03-26 20:27:25, 2026-03_rel