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Chapter 2 Messages
Message Format
12 Quantum ATL SuperLoader Software Interface Guide
Figure 1 Extended
Message
Table 3 Extended
Message
Bit
Byte76543210
0
Extended Message (01h)
1
Extended Message Length
2
Extended Message Code
3 to
n-1
Extended Message Arguments
Field Description
Extended Message
Length
This field specifies the length, in bytes, of the Extended Message
Code plus the Extended Message Arguments that follow.
Therefore, the total length of the message is equal to the Extended
Message Length plus 2.
A value of 0 for the Extended Message Length indicates that 256
bytes follow.
Extended Message Code The SuperLoader supports the following Extended Messages:
01h SYNCHRONOUS DATA TRANSFER REQUEST
03h WIDE DATA TRANSFER REQUEST
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