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參數(shù)資料
| 型號： | E86MON |
| 英文描述： | E86MON - E86MON Software User＇s Manual |
| 中文描述： | E86MON - E86MON軟件用戶手冊 |
| 文件頁數(shù)： | 10/74頁 |
| 文件大?。?/td> | 1581K |
| 代理商： | E86MON |
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E86MON Software User’s Manual
1-4
2.0
The automatic baud rate detection feature is useful in the following circumstances:
When a user program is installed, but you want to invoke the monitor instead
When the programmed baud rate does not match the terminal baud rate
When the serial port does not match the serial port the terminal is plugged into
When the programmed CPU speed does not match the actual CPU speed (the
bit clock is divided down from the CPU clock)
When you do not want to wait three seconds for the monitor to boot
The automatic baud rate detection is designed to detect baud rates from 2400 to
115200, but its success depends on the CPU type and speed. At the default CPU
frequency of 40 MHz, Am186CC/CH/CU Microcontroller CDP, SD186, and
Net186 boards can reliably detect baud rates up to 115200; SD188 demonstration
boards can reliably detect baud rates up to 57600.
Note that when the autobaud feature of the monitor is used, monitor extensions
must be loaded manually with the LL command.
You can use the P command to set the default baud rate. This is especially useful
when the baud rate is so high relative to the CPU type and frequency that the
automatic baud rate detection is unreliable.
Architecture
The E86MON software remains resident in the upper sectors of the Flash memory.
The user application resides in the sectors below the E86MON software. The
E86MON software provides debug and download functionality while creating a
virtual reset vector 32K below 1 Mbyte. (Note that some flash devices require the
reset vector to be lower in memory due to their sector size. For example, the
Am29F040 has a fixed sector size of 64K, so the reset vector must be located 64K
below 1 Mbyte.)
frtbook Page 4 Monday, August 13, 2001 4:07 PM
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