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bram $__ICE40_RAM4K_M0
init 1
abits 8
dbits 16
groups 2
ports 1 1
wrmode 0 1
enable 1 16
transp 0 0
clocks 2 3
clkpol 2 3
endbram
bram $__ICE40_RAM4K_M123
init 1
abits 9 @M1
dbits 8 @M1
abits 10 @M2
dbits 4 @M2
abits 11 @M3
dbits 2 @M3
groups 2
ports 1 1
wrmode 0 1
enable 1 1
transp 0 0
clocks 2 3
clkpol 2 3
endbram
# The syn_* attributes are described in:
# https://www.latticesemi.com/-/media/LatticeSemi/Documents/Tutorials/AK/LatticeDiamondTutorial311.ashx
attr_icase 1
match $__ICE40_RAM4K_M0
# implicitly requested RAM or ROM
attribute !syn_ramstyle syn_ramstyle=auto
attribute !syn_romstyle syn_romstyle=auto
attribute !ram_block
attribute !rom_block
attribute !logic_block
min efficiency 2
make_transp
or_next_if_better
endmatch
match $__ICE40_RAM4K_M0
# explicitly requested RAM
attribute syn_ramstyle=block_ram ram_block
attribute !syn_romstyle
attribute !rom_block
attribute !logic_block
min wports 1
make_transp
or_next_if_better
endmatch
match $__ICE40_RAM4K_M0
# explicitly requested ROM
attribute syn_romstyle=ebr rom_block
attribute !syn_ramstyle
attribute !ram_block
attribute !logic_block
max wports 0
make_transp
or_next_if_better
endmatch
match $__ICE40_RAM4K_M123
# implicitly requested RAM or ROM
attribute !syn_ramstyle syn_ramstyle=auto
attribute !syn_romstyle syn_romstyle=auto
attribute !ram_block
attribute !rom_block
attribute !logic_block
min efficiency 2
make_transp
or_next_if_better
endmatch
match $__ICE40_RAM4K_M123
# explicitly requested RAM
attribute syn_ramstyle=block_ram ram_block
attribute !syn_romstyle
attribute !rom_block
attribute !logic_block
min wports 1
make_transp
or_next_if_better
endmatch
match $__ICE40_RAM4K_M123
# explicitly requested ROM
attribute syn_romstyle=ebr rom_block
attribute !syn_ramstyle
attribute !ram_block
attribute !logic_block
max wports 0
make_transp
endmatch
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