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gateware: rewrite mailbox to use bits_for.

This commit is contained in:
whitequark 2016-11-01 06:28:43 +00:00
parent 43cd970100
commit 636d4efe81
1 changed files with 2 additions and 2 deletions
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4
artiq/gateware/amp/mailbox.py
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@ -12,10 +12,10 @@ class Mailbox(Module):
values = Array([Signal(32) for _ in range(size)]) values = Array([Signal(32) for _ in range(size)])
for i in self.i1, self.i2: for i in self.i1, self.i2:
self.sync += [ self.sync += [
i.dat_r.eq(values[i.adr & 0xff]), i.dat_r.eq(values[i.adr[:bits_for(size-1)]]),
i.ack.eq(0), i.ack.eq(0),
If(i.cyc & i.stb & ~i.ack, If(i.cyc & i.stb & ~i.ack,
i.ack.eq(1), i.ack.eq(1),
If(i.we, values[i.adr & 0xff].eq(i.dat_w)) If(i.we, values[i.adr[:bits_for(size-1)]].eq(i.dat_w))
) )
] ]