code_tidbits_reg_seq_example.v « asicworld « tests - iCE40/yosys - clone of https://github.com/YosysHQ/yosys

about summary refs log tree commit diff stats

path: root/tests/asicworld/code_tidbits_reg_seq_example.v

blob: 458c87927442bb5d13f2da1dbfaf0018f53a051c (plain)

module reg_seq_example( clk, reset, d, q);
input clk, reset, d;
output q;
  
reg   q;
wire clk, reset, d;

always @ (posedge clk or posedge reset)
if (reset) begin
  q <= 1'b0;
end else begin
  q <= d;
end

endmodule

Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */

#!/bin/sh
# Copyright (C) 2006-2013 OpenWrt.org
# Copyright (C) 2010 Vertical Communications

boot_hook_splice_start() {
	export -n PI_HOOK_SPLICE=1
}

boot_hook_splice_finish() {
	local hook
	for hook in $PI_STACK_LIST; do
		local v; eval "v=\${${hook}_splice:+\$${hook}_splice }$hook"
		export -n "${hook}=${v% }"
		export -n "${hook}_splice="
	done
	export -n PI_HOOK_SPLICE=
}

boot_hook_init() {
	local hook="${1}_hook"
	export -n "PI_STACK_LIST=${PI_STACK_LIST:+$PI_STACK_LIST }$hook"
	export -n "$hook="
}

boot_hook_add() {
	local hook="${1}_hook${PI_HOOK_SPLICE:+_splice}"
	local func="${2}"

	[ -n "$func" ] && {
		local v; eval "v=\$$hook"
		export -n "$hook=${v:+$v }$func"
	}
}

boot_hook_shift() {
	local hook="${1}_hook"
	local rvar="${2}"

	local v; eval "v=\$$hook"
	[ -n "$v" ] && {
		local first="${v%% *}"

		[ "$v" != "${v#* }" ] && \
			export -n "$hook=${v#* }" || \
			export -n "$hook="

		export -n "$rvar=$first"
		return 0
	}

	return 1
}

boot_run_hook() {
	local hook="$1"
	local func

	while boot_hook_shift "$hook" func; do
		local ran; eval "ran=\$PI_RAN_$func"
		[ -n "$ran" ] || {
			export -n "PI_RAN_$func=1"
			$func "$1" "$2"
		}
	done
}

pivot() { # <new_root> <old_root>
	/bin/mount -o noatime,move /proc $1/proc && \
	pivot_root $1 $1$2 && {
		/bin/mount -o noatime,move $2/dev /dev
		/bin/mount -o noatime,move $2/tmp /tmp
		/bin/mount -o noatime,move $2/sys /sys 2>&-
		/bin/mount -o noatime,move $2/overlay /overlay 2>&-
		return 0
	}
}

fopivot() { # <rw_root> <work_dir> <ro_root> <dupe?>
	/bin/mount -o noatime,lowerdir=/,upperdir=$1,workdir=$2 -t overlay "overlayfs:$1" /mnt
	pivot /mnt $3
}

ramoverlay() {
	mkdir -p /tmp/root
	/bin/mount -t tmpfs -o noatime,mode=0755 root /tmp/root
	mkdir -p /tmp/root/root /tmp/root/work
	fopivot /tmp/root/root /tmp/root/work /rom 1
}