riscv-openocd/tcl/cpld/altera-epm240.cfg

# Altera MAXII EPM240T100C CPLD

if { [info exists CHIPNAME] } {
	set _CHIPNAME $CHIPNAME
} else {
	set _CHIPNAME epm240
}

# see MAX II Device Handbook
# Table 3-3: 32-Bit MAX II Device IDCODE
# Version     Part Number             Manuf. ID        LSB
# 0000        0010 0000 1010 0001     000 0110 1110    1
jtag newtap $_CHIPNAME tap -irlen 10 \
	-expected-id 0x020a10dd \
	-expected-id 0x020a20dd \
	-expected-id 0x020a30dd \
	-expected-id 0x020a40dd \
	-expected-id 0x020a50dd \
	-expected-id 0x020a60dd

# 200ns seems like a good speed
# c.f. Table 5-34: MAX II JTAG Timing Parameters
adapter speed 5000