3980xpi Users Manual - Data I/O Corporation

Commands
If you choose E then Select Device, a list containing only the
manufacturers in the alg.ext file is displayed. If the programmer cannot
find the alg.ext file, it displays Cannot access system file. Insert
System disk.
K—Selects algorithms from the Keep Current algorithms on the disk in the
disk drive. If you select K, then Select Device, the Keep Current Part List is
displayed. Keep Current algorithms are downloaded from Data I/O's Keep
Current BBS and provide immediate support for new device algorithms and
updated device algorithms. For more information, see the Appendix C
chapter.
C—Selects algorithms from the Custom Menu algorithms on the disks in
the disk drives. If you select C then Select Device, the Custom Menu List is
displayed.
Note: See “Save System Parameters” on page 4-31 to learn how to save
your Algorithm Type and other parameter changes as powerup defaults.
� Algorithm Media (File) (F,M)
The 3980/3980xpi provides two algorithm media options: Floppy Disk (F)
and Mass Storage Module (M). The device selection operation selects the
device algorithm from the designated algorithm media.
� Checksum Calculation (4,8,D,B)
Determines the word size and display of the checksum for all device
operations. The Odd/Even Byte Swap option affects this calculation.
4—calculate and display 4-digit, 4-bit checksum. For 4-bit devices.
8 (default)—calculate and display 8-digit, 8-bit checksum. For 8-bit
devices.
D—calculate and display the checksum based on the number of bits per
word in the device width. For 16- and 32-bit devices.
B—calculate and display the checksum based on the number of bits per
word in the device width, and also to display the 8-bit checksum.
� Data Word Width
Should match the data bus word width in the target microprocessor system
for the device being programmed. For 8-bit (or larger) devices, any word
width between 4 and 64 may be typed in. For 4-bit devices, your word
width choices are 4, 8, 16, and 32. When performing a Quick Copy, the
Data Word Width is set to the device word width and restored to the
original value after the Quick Copy is complete.
The programmer changes this parameter to match the selected device's
width except when the current Data Word Width is 16, your selected
device's word width is 8 AND the previously-selected device's word width is
also 8. When this condition exists, this parameter does not change.
� User Data Size
Defines the hexadecimal size (in bytes) of the data block used in device
operations. This value usually equals the device size or to a multiple of the
device size for set programming. User Data Size works with Total Set Size
to determine the total amount of bytes for a set operation. This parameter
can also indicate the number of bytes in a data transfer operation.
4-22 3980xpi/3980/3900/2900 User Manual