參數(shù)資料
型號(hào): PAK-I
廠商: Electronic Theatre Controls, Inc.
英文描述: 310 Ivy Glen Court
中文描述: 310常春藤格倫法院
文件頁數(shù): 8/28頁
文件大?。?/td> 151K
代理商: PAK-I
DIRS – Byte indicating port directions (0=input, 1=output)
IBYTE, OBYTE – Input or output byte
Using the alternate form of a command prevents it from returning the
status result.
Floating Point Numbers and Errors
The 32-bit floating point representation used by
the Pak I is a modified version of the IEEE754
format. The first byte is the exponent (biased by
127). If the exponent is zero, the number is zero.
The second byte contains the most significant bits
of the mantissa. The most-significant bit is the sign
bit (1 is negative) and the mantissa starts with an
implied 1 before the decimal point. The next two
bytes are the remainder of the mantissa.
This differs from the IEEE745 format (the one
used by PC C compilers, for example) only
slightly. In the IEEE745 format, the sign is in the
most-significant bit of the exponent. The most-
significant bit of the first byte is actually the least
significant bit of the exponent. Otherwise, the two
formats are identical. The Pak I has functions to
convert back and forth between the two formats.
The accompanying disk contains a Windows
program (fconvert.exe) that will convert between a
normal floating point number, the Pak I's format,
and the IEEE745 format. Simply enter the number
you know and the program will display the other
two formats.
The status return bits contain the following
相關(guān)PDF資料
PDF描述
PAK-VA 310 Ivy Glen Court
PAK-VI 310 Ivy Glen Court
PAL10016P8 3ns ECL ASPECT Programmable Array Logic
PAL10016P8-3 3ns ECL ASPECT Programmable Array Logic
PAL1016P8 3ns ECL ASPECT Programmable Array Logic
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PAK-II 制造商:未知廠家 制造商全稱:未知廠家 功能描述:310 Ivy Glen Court
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PAK-IV 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Using the PAK-IV I/O Coprocessor
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