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Word sum Big Endian (x16)
Buffer data are summed word-by-word irrespective of current buffer view mode organization.
Any carry bits exceeding 32-bits are neglected. This checksum mode is indicated by string
(x16 BE) displayed after checksum value in main program window. Term Big Endian means,
the buffer checksum is calculated from words read from buffer in Big Endian mode.
CRC-CCITT
Buffer data are summed by bytes to Word using polynomial x^16+x^12+x^5+1 (0x1021), init
value 0, and XOR out 0, reflexions in/out are off
CRC-XMODEM
Buffer data are summed by bytes to Word using polynomial x^16 + x^15 + x^2 +1 (0x8005), init
value 0
CRC-16
Buffer data are summed by bytes to sum by bytes to WORD using standard CRC-16 algorithm
with polynomial x^16+x^15+x^2+1 (0x8005), init value 0, and XOR out 0
CRC-32
Buffer data are summed by bytes to DWORD using standard CRC-32 algorithm with
polynomial 0x04C11DB7, init value 0xFFFFFFFF, and XOR out 0xFFFFFFFF
MD5
an MD5 hash expressed as a sequence of 32 hexadecimal digits (128 bits)
SHA-1
"Secure Hash Standard" expressed as a sequence of 40 hexadecimal digits (160 bits)
Checksum forms
Straight checksum without additional adjustments.
Negated negation of checksum so, that SUM + NEG. = FFFFH.
Supplement is complement of checksum so, that SUM + SUPPL. = 0 (+ carry).
Device dependent checksum - applies for some devices, e.g. STMicroelectronics's STM8
family The checksum modes for main checksum can be set in pop-up menu by clicking on
label checksum in main program window or by menu shortcuts
Shift+Ctrl+1 for Byte sum (x8),
Shift+Ctrl+2 for Word sum Little Endian (x16)
Shift+Ctrl+3 for Word sum Big Endian (x16) etc...
Word is 16-bit word. DWORD is 32-bit word.
Device
Menu Device includes functions for a work with selected programmable devices - device
select, read data from device, device blank check, device program, device verify and device
erase.
Device / Select from default devices
This window allows selecting the desired type of the device from list of default devices. This
one is a cyclic buffer in which are stored recently selected devices including their device
options. This list is saved to disk by command
File / Exit and save .