[HX512] custom firmwares

kuroneko

I had the chance to verify my f/w designs this week (ISP cable arrived), so I thought I might as well share them in case they prove useful to others.

Unless stated otherwise the CPLD retains the pin assignment used by the Hydra (clock/reset/command) as well as the command encoding (rd/wr/latch). The archives contain the ABEL source file(s) and the JEDEC file for 3.3V/slow slew rate.

hx512_cpld.0

- no setup cycle (hard-wired post-increment)
- no part of the address is p/reset while setting any other part
- commands:
  %0-: rd/wr
  %10: latch LSB (1 cycle)                                         [b]LSB[/b]
  %11: latch MSB (1 cycle + 1 optional cycle to set 64K page)      [b]MSB [noparse][[/noparse]page][/b]
- LED assignment: P5/-/-/P2..P0: latch mode/-/-/page

hx512_cpld.1

- no setup cycle (hard-wired post-increment)
- no part of the address is p/reset while setting any other part
- commands:
  %0-: rd/wr
  %10: latch LSB (1 cycle + 2 optional cycles to set MSB and page) [b]LSB [noparse][[/noparse]MSB [noparse][[/noparse]page]][/b]
  %11: latch MSB (1 cycle + 1 optional cycle to set 64K page)      [b]MSB [noparse][[/noparse]page][/b]
- LED assignment: P5..P4/-/P2..P0: latch mode/-/page

Mike Huselton

Just a thought: would you be willing, for a fee, to program my HYDRA card with what ever final results you come up with.
I know this sounds vague, but I would rather not invest in the cabling, verification, and whatnot. I send the card to you and you send the card back reprogrammed. Just think about it.

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JMH

kuroneko

James Michael Huselton said...
Just a thought: would you be willing, for a fee, to program my HYDRA card with what ever final results you come up with.

Short answer yes (but forget about the fee). However, as I live in Japan it's your decision whether you want to send the card abroad (for what is basically a 3sec job).

@all: Is there someone closer (locationwise) to James who could help him out?

jazzed

One could build a programmer with the Hydra (I'm too busy). JTAG is built on SPI ... the same interface used by SD cards. More JTAG information for anyone with time to persue it is on Wikipedia http://en.wikipedia.org/wiki/JTAG .

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--Steve


Propalyzer: Propeller PC Logic Analyzer
http://forums.parallax.com/showthread.php?p=788230

Ron Sutcliffe

Here is the place to start
http://hobby_elec.piclist.com/e_cpld3_3.htm

Ron

Mike Huselton

I have too many projects right now. I want to pay someone to program the card I have, tested and return to me.
The intellectual challenges very simple I just do not have time.

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JMH