ST486DX ST Microelectronics, ST486DX Datasheet - Page 28
![no-image](/images/no-image-200.jpg)
ST486DX
Manufacturer Part Number
ST486DX
Description
PROGRAMMING MANUAL
Manufacturer
ST Microelectronics
Datasheet
1.ST486DX.pdf
(34 pages)
- Current page: 28 of 34
- Download datasheet (164Kb)
ST486DX - SMM SOFTWARE CONSIDERATIONS
3.10
An SMI routine can be debugged with standard debugging tools (such as DOS DEBUG) if the
following requirements are met:
38
1. The debugger will only be able to set a code break point using INT 3 outside of the SMI han-
2. The debugger needs to be running in real mode and the SMM routine can not enter protected
3. Before an INT 3 break point is executed, all segment registers should have their limits modi-
dler. The debug control register DR7 is set to the reset value upon entry to the SMI handler.
Therefore, any break conditions in DR0-3 will be disabled after entry to SMM. Debug regis-
ters can be used if set after entry to the SMI handler and DR0-3 are saved.
mode. This insures that normal system interrupts, BIOS calls and the debugger will work
correctly from SMM mode.
fied to 64K, or larger, within the SMM routine.
Testing and Debugging SMM Code
Related parts for ST486DX
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![TMM829A](/images/no-image3.png)
Part Number:
Description:
Temperature Compensated Zener Diodes
Manufacturer:
ST Microelectronics
Datasheet:
![ST485](/images/no-image3.png)
Part Number:
Description:
Low power RS-485/RS-422 transceiver
Manufacturer:
ST Microelectronics
Datasheet:
![ST485E](/images/no-image3.png)
Part Number:
Description:
LOW POWER RS-485/RS-422 TRANSCEIVER
Manufacturer:
ST Microelectronics
Datasheet:
![P36NE0](/images/no-image3.png)
Part Number:
Description:
Search -----> STP36NE0
Manufacturer:
ST Microelectronics
Datasheet:
![P36NE06](/images/no-image3.png)
Part Number:
Description:
search -----> STP36NE06
Manufacturer:
ST Microelectronics
Datasheet:
![TDA7293](/images/no-image3.png)
Part Number:
Description:
120V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY
Manufacturer:
ST Microelectronics
Datasheet:
![M27C1001-70B1](/images/no-image3.png)
Part Number:
Description:
Manufacturer:
ST Microelectronics
Datasheet:
![STP22NE10L](/images/no-image3.png)
Part Number:
Description:
N-channel 55V - 0.07 Ohm - 22A StripFET Power MOSFET
Manufacturer:
ST Microelectronics, Inc.
Datasheet:
![STP32N06L](/images/no-image3.png)
Part Number:
Description:
Old PRODUCT: Not Suitable For Design-in
Manufacturer:
ST Microelectronics, Inc.
Datasheet:
![STPMC1](/images/no-image3.png)
Part Number:
Description:
Programmable poly-phase energy calculator IC
Manufacturer:
ST Microelectronics
Datasheet:
![2N4014](/images/no-image3.png)
Part Number:
Description:
High-voltage, High Current Switch
Manufacturer:
ST Microelectronics, Inc.
Datasheet:
![L6000](/images/no-image3.png)
Part Number:
Description:
Single Chip Read & Write Channel
Manufacturer:
ST Microelectronics, Inc.
Datasheet:
![BTA10-400GP](/images/no-image3.png)
Part Number:
Description:
10A Triacs
Manufacturer:
ST Microelectronics, Inc.
Datasheet:
![BTA20-600BW](/images/no-image3.png)
Part Number:
Description:
20A Triacs
Manufacturer:
ST Microelectronics, Inc.
Datasheet:
![BTA41-700B](/images/no-image3.png)
Part Number:
Description:
-
Manufacturer:
ST Microelectronics, Inc.
Datasheet: