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from amaranth import *
from amaranth.build import *
from amaranth.vendor import IntelPlatform
from .resources import *
__all__ = ["MiSTPlatform"]
class MiSTPlatform(IntelPlatform):
"""MiST is the original Amiga/Atari ST retro FPGA board. It has been
the inspiration for the MiSTer board.
More information can be found on the wiki page:
https://github.com/mist-devel/mist-board/wiki
"""
device = "EP3C25" # Cyclone III 25K LEs
package = "E144"
speed = "C8"
default_clk = "clk27"
resources = [
Resource(
"clk27", 0, Pins("54", dir="i"),
Clock(27e6), Attrs(io_standard="3.3-V LVTTL"),
),
Resource(
"clk27", 1, Pins("55", dir="i"),
Clock(27e6), Attrs(io_standard="3.3-V LVTTL")),
*LEDResources(
pins="7",
attrs=Attrs(io_standard="3.3-V LVTTL"),
),
VGAResource(0,
r="135 137 141 142 143 144",
g="106 110 111 112 113 114",
b="115 120 121 125 132 133",
hs="119", vs="136",
attrs=Attrs(io_standard="3.3-V LVTTL"),
),
UARTResource(0,
rx="31", tx="46",
attrs=Attrs(io_standard="3.3-V LVTTL"),
),
SPIResource(0,
cs_n="127 91 90", # SS2/FPGA, SS3/OSD, SS4/SD_DIRECT
clk="126", copi="88", cipo="105",
attrs=Attrs(io_standard="3.3-V LVTTL"),
),
SDRAMResource(0,
clk="43", cs_n="59", we_n="66", ras_n="60", cas_n="64",
ba="58 51", a="49 44 42 39 4 6 8 10 11 28 50 30 32",
dq="83 79 77 76 72 71 69 68 86 87 98 99 100 101 103 104",
dqm="67 85",
attrs=Attrs(io_standard="3.3-V LVCMOS"),
),
Resource("audio", 0,
Subsignal("l", Pins("65", dir="o")),
Subsignal("r", Pins("80", dir="o")),
Attrs(io_standard="3.3-V LVTTL"),
),
Resource("conf_data0", 0,
Pins("13", dir="i"),
Attrs(io_standard="3.3-V LVTTL"),
),
]
connectors = []
if __name__ == "__main__":
from .test.blinky import Blinky
MiSTPlatform().build(Blinky(), do_program=False)
print((
"To use test bitstream on MiST; copy 'build/top.rbf' to file\n"
"named 'core.rbf' on SD card so it will be loaded by MiST firmware"
))
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