XC95288XL and XC95144XL support #285
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The last bits to determine from this changeset are usercode_low/high, according to our IRC discussions... Here's a snippet I took from the #!/usr/bin/env python
import sys
def jed_to_word_address_mapping(jed_address):
block_num = jed_address // 432
block_bit = jed_address % 432
word_addr = block_num * 15
if block_bit < 9 * 32:
word_addr += block_bit // 32
else:
word_addr += 9 + (block_bit - 9 * 32) // 24
return word_addr
def word_address_to_fpgm_fvfy_address_mapping(word_address):
block_num = word_addr // 15
block_off = word_addr % 15
dev_addr = 32 * block_num + 8 * (block_off // 5) + block_off % 5
return dev_addr
jed_addr = int(sys.argv[1])
word_addr = jed_to_word_address_mapping(jed_addr)
print("Word address mapping: {}".format(word_addr))
print("FPGM/FVFY mapping : {}".format(word_address_to_fpgm_fvfy_address_mapping(word_addr)))Which yields the following numbers outlined in the docs, for validation: I built and examined some example JED files I generated with ISE 14.7 with USERCODE 0000 and 1111, by using the Running the script above with those address lines: Most probably I'm missing some crucial bit or I've introduced some error in this analysis, happy to revisit it if something is wrong. |
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@whitequark How did you manage to set USERCODEs I'm trying to reduce the degrees of freedom between your analysis (with the |
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As per @rroohhh analysis, usercode_low/high is shared across Xilinx CPLD models, see IRC logs for details: https://libera.irclog.whitequark.org/glasgow/2021-10-29 |
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LGTM, but please squash the commits into two; one that fixes the logging issue, and another that adds support for the new devices. Please do use our conventions for commit messages as well. |
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Thank you! |
Adding support for this Xilinx CPLD after some guidance in:
https://discord.com/channels/613131135903596547/613461005392936961/900928494450638879
After reading about the glasgow-archive in the contribution guidelines, I'll perhaps add the PDF:
https://www.xilinx.com/support/documentation/data_sheets/ds055.pdf
Although the material is quite well covered already in accessions G00014 and G00015?