Add comments about instruction formats. Correct an instruction
specification (cut&paste error). git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@104 81a1dc3b-b13d-400b-aceb-764788c761c2
This commit is contained in:
Brian S. Dean
parent
e95114a18d
commit
27ea11ae30
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@ -30,17 +30,9 @@
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# id = <id> ; # quoted string
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# desc = <description> ; # quoted string
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# chip_erase_delay = <num> ; # micro-seconds
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# eeprom
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# paged = <yes/no> ; # yes / no
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# size = <num> ; # bytes
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# page_size = <num> ; # bytes
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# num_pages = <num> ; # numeric
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# min_write_delay = <num> ; # micro-seconds
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# max_write_delay = <num> ; # micro-seconds
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# readback_p1 = <num> ; # byte value
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# readback_p2 = <num> ; # byte value
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# ;
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# flash
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# pgm_enable = <instruction format> ;
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# chip_erase = <instruction format> ;
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# memory <memtype>
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# paged = <yes/no> ; # yes / no
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# size = <num> ; # bytes
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# page_size = <num> ; # bytes
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@ -49,12 +41,58 @@
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# max_write_delay = <num> ; # micro-seconds
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# readback_p1 = <num> ; # byte value
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# readback_p2 = <num> ; # byte value
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# read = <instruction format> ;
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# write = <instruction format> ;
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# read_lo = <instruction format> ;
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# read_hi = <instruction format> ;
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# write_lo = <instruction format> ;
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# write_hi = <instruction format> ;
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# loadpage_lo = <instruction format> ;
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# loadpage_hi = <instruction format> ;
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# writepage = <instruction format> ;
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# ;
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# ;
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#
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# If any of the above parameters is not specified, the default value of
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# 0 is used for numerics or the empty string ("") for string values.
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# If a required parameter is left empty, AVRPROG will complain.
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# If any of the above parameters are not specified, the default value
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# of 0 is used for numerics or the empty string ("") for string
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# values. If a required parameter is left empty, AVRPROG will
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# complain.
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#
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# NOTES:
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# * Not all memory types will implement all instructions.
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# * AVR Fuse bits and Lock bits are implemented as a type of memory.
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# * Example memory types are:
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# "flash", "eeprom", "fuse", "lfuse" (low fuse), "hfuse" (high
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# fuse), "signature", "calibration", "lock"
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# * The memory type specified on the avrprog command line must match
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# one of the memory types defined for the specified chip.
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#
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# INSTRUCTION FORMATS
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#
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# Instruction formats are specified as a comma seperated list of
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# string values containing information (bit specifiers) about each
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# of the 32 bits of the instruction. Bit specifiers may be one of
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# the following formats:
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#
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# '1' = the bit is always set on input as well as output
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#
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# '0' = the bit is always clear on input as well as output
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#
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# 'x' = the bit is ignored on input and output
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#
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# 'a' = the bit is an address bit, the bit-number matches this bit
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# specifier's position within the current instruction byte
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#
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# 'aN' = the bit is the Nth address bit, bit-number = N, i.e., a12
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# is address bit 12 on input, a0 is address bit 0.
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#
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# 'i' = the bit is an input data bit
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#
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# 'o' = the bit is an output data bit
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#
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# Each instruction must be composed of 32 bit specifiers. The
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# instruction specification closely follows the instruction data
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# provided in Atmel's data sheets for their parts.
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#
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# See below for some examples.
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#
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@ -135,7 +173,7 @@ part
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write_lo = " 0 1 0 0 0 0 0 0",
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" x x x x x x x a8",
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" a7 a6 a5 a4 a3 a2 a1 a0",
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" o o o o o o o o";
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" i i i i i i i i";
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write_hi = " 0 1 0 0 1 0 0 0",
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" x x x x x x x a8",
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@ -191,7 +229,7 @@ part
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write_lo = " 0 1 0 0 0 0 0 0",
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" x x x x x x a9 a8",
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" a7 a6 a5 a4 a3 a2 a1 a0",
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" o o o o o o o o";
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" i i i i i i i i";
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write_hi = " 0 1 0 0 1 0 0 0",
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" x x x x x x a9 a8",
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@ -252,7 +290,7 @@ part
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write_lo = " 0 1 0 0 0 0 0 0",
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" x x x x x x a9 a8",
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" a7 a6 a5 a4 a3 a2 a1 a0",
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" o o o o o o o o";
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" i i i i i i i i";
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write_hi = " 0 1 0 0 1 0 0 0",
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" x x x x x x a9 a8",
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@ -308,7 +346,7 @@ part
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write_lo = " 0 1 0 0 0 0 0 0",
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" x x x x x a10 a9 a8",
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" a7 a6 a5 a4 a3 a2 a1 a0",
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" o o o o o o o o";
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" i i i i i i i i";
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write_hi = " 0 1 0 0 1 0 0 0",
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" x x x x x a10 a9 a8",
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@ -364,7 +402,7 @@ part
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write_lo = " 0 1 0 0 0 0 0 0",
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" x x x x x a10 a9 a8",
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" a7 a6 a5 a4 a3 a2 a1 a0",
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" o o o o o o o o";
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" i i i i i i i i";
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write_hi = " 0 1 0 0 1 0 0 0",
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" x x x x x a10 a9 a8",
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@ -420,7 +458,7 @@ part
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write_lo = " 0 1 0 0 0 0 0 0",
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" x x x x a11 a10 a9 a8",
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" a7 a6 a5 a4 a3 a2 a1 a0",
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" o o o o o o o o";
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" i i i i i i i i";
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write_hi = " 0 1 0 0 1 0 0 0",
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" x x x x a11 a10 a9 a8",
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@ -476,7 +514,7 @@ part
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write_lo = " 0 1 0 0 0 0 0 0",
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" x x x x a11 a10 a9 a8",
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" a7 a6 a5 a4 a3 a2 a1 a0",
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" o o o o o o o o";
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" i i i i i i i i";
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write_hi = " 0 1 0 0 1 0 0 0",
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" x x x x a11 a10 a9 a8",
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