flashrom.org and At29C256

I've managed to burn AT29C256 (widely used, and used in Searle's computer) on Realtec/RTL 8139 nic with flashrom.org's software with the following patch (under cut). AT29C256 is unknown chip for it, that's strange. I'll tell a bit later about it, how - just make a reminder to myself (and possibly others). The only note - I have 3 nics, and was able to write only the first 256 bytes on the first nic. The second one worked ok.

UPDATED at 121125

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Тут мне надо было прошить AT29C256 (которая вааще везде нужна в таких делах - а так же используется в схеме у схеме от Searle, )- и делал я это на Realtek/RTL 8139 тулзой от flashrom.org .
Оно такого чипа не знает, пришлось налабать патчик. У меня Realtecов три штуки, в первой прошилось почему-то только 256 байт, а вот вторая завелась. Об этом всем - позже, а пока - патч.
Обновлено 121125

flashchips.h , after
#define ATMEL_AT29C512 0x5D
add
#define ATMEL_AT29C256 0xDC

flashchips.c

{
.vendor = "Atmel",
.name = "AT29C256",
.bustype = BUS_PARALLEL,
.manufacture_id = ATMEL_ID,
.model_id = ATMEL_AT29C256,
.total_size = 32,
.page_size = 64, /*It should*/
.feature_bits = FEATURE_LONG_RESET,
.tested = TEST_OK_PREW,
.probe = probe_jedec,
.probe_timing = 10000, /* 10mS, Enter=Exec */
.block_erasers =
{
{
.eraseblocks = { {32 * 1024, 1} },
.block_erase = erase_chip_block_jedec,
}
},
.write = write_jedec,
.read = read_memmapped,
.voltage = {4500, 5500},
},


UPDATE:
The strange thing is that it burns *some* images, but does not burn others with the following:
Erasing and writing flash chip... Trying erase function 0... 0x000000-0x007fff:EWVERIFY FAILED at 0x00000000! Expected=0xf3, Read=0x00, failed byte count from 0x00000000-0x0000003f: 0x13
retrying.
VERIFY FAILED at 0x00000000! Expected=0xf3, Read=0x00, failed byte count from 0x00000000-0x0000003f: 0x13
retrying.
Currently I do not understand whats going on