FRAM71B
User’s Manual
FRAM71B 1.00
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©Hans Brueggemann, 2016
A: FRAM71B-1024 allows you to maintain two different setups that consume considerable
memory space. If only one configuration (say, BOT) is sufficient for you, you can use the TOP
area F_0x00000 – F_0x2FFFF as additional three F_Blocks for Chip assignments. This includes
TOP F_0x20000 – F_0x2FFFF because it's no longer required for configuration storage.
Q8: After POKE"2C000","0000 0000 0000 0000 0000 0000 0000 0000", PEEK$ ("2C000", 32)
gives "00 00 00 00 00 00 00 00 10 00 10 10 10 10 10 10" instead of all zeroes. Is there a fault
in FRAM71B's memory?
A: No. This is normal behavior and only occurs on configurations with less than 8 modules.
As soon as you have configured more than seven modules, all trailing zeroes of the configu-
ration will be read back as zeroes.
Q9: The sequence to re-initialize FRAM71B after a power loss is quite tedious. Is there a
short-cut to it?
A: Next time you have to re-initialize FRAM71B, try this: POKE"2C000", PEEK$("2C000",32).
Do this only if you are sure that the last known configuration was a "good" one. Otherwise,
it's safer to go as shown under Q5, because you get the opportunity to inspect and alter the
configuration.
