diff --git a/src/pages/edit/Editor/components/ValueEditor/index.tsx b/src/pages/edit/Editor/components/ValueEditor/index.tsx
new file mode 100644
index 0000000..2e5a5e7
--- /dev/null
+++ b/src/pages/edit/Editor/components/ValueEditor/index.tsx
@@ -0,0 +1,102 @@
+import {
+	Button,
+	Stack,
+	styled,
+	ToggleButton,
+	ToggleButtonGroup,
+} from "@mui/material";
+import { useState } from "react";
+import type { CCIntrinsicComponentConstSpecConfigViewMode as Mode } from "../../../../../store/intrinsics/types";
+import type { SimulationValue } from "../../../../../store/simulation";
+import {
+	fitSimulationValue,
+	formatSimulationValue,
+	parseSimulationValue,
+} from "./value";
+
+const modes: Record<Mode, string> = {
+	binary: "Bin",
+	hex: "Hex",
+	"utf-8": "UTF-8",
+};
+
+const Editor = styled("textarea")(({ theme }) => ({
+	padding: theme.spacing(1),
+	flex: 1,
+	resize: "none",
+	borderStyle: "solid",
+	borderWidth: "1px",
+	borderRadius: theme.shape.borderRadius,
+	outline: "none",
+	fontFamily: "monospace",
+	wordBreak: "break-all",
+}));
+
+type Props = {
+	value: SimulationValue;
+	onChange: (value: SimulationValue) => void;
+	mode: Mode;
+	onModeChange: (mode: Mode) => void;
+	bitWidth?: number;
+	readOnly?: boolean;
+};
+
+export function CCComponentEditorValueEditor(props: Props) {
+	const [text, setText] = useState(() =>
+		formatSimulationValue(props.value, props.mode),
+	);
+
+	const parse = (text: string, mode: Mode) => {
+		const value = parseSimulationValue(text, mode);
+		return value && props.bitWidth !== undefined
+			? fitSimulationValue(value, props.bitWidth)
+			: value;
+	};
+	const newValue = parse(text, props.mode);
+
+	const changeMode = (mode: Mode) => {
+		props.onModeChange(mode);
+		setText(formatSimulationValue(newValue ?? props.value, mode));
+	};
+
+	return (
+		<Stack sx={{ height: "100%", gap: 0.5 }}>
+			<Stack direction="row" sx={{ gap: 0.5 }}>
+				<ToggleButtonGroup
+					value={props.mode}
+					onChange={(_, value) => {
+						if (!Object.hasOwn(modes, value)) return;
+						changeMode(value as Mode);
+					}}
+					exclusive
+					size="small"
+					sx={{ flex: 1 }}
+				>
+					{Object.entries(modes).map(([mode, label]) => (
+						<ToggleButton key={mode} value={mode} sx={{ flex: 1, p: 0.25 }}>
+							{label}
+						</ToggleButton>
+					))}
+				</ToggleButtonGroup>
+				{!props.readOnly && (
+					<Button
+						variant="outlined"
+						size="small"
+						disabled={!newValue}
+						onClick={() => newValue && props.onChange(newValue)}
+						sx={{ py: 0.25 }}
+					>
+						Apply
+					</Button>
+				)}
+			</Stack>
+			<Editor
+				value={text}
+				onChange={(e) => setText(e.target.value)}
+				spellCheck={false}
+				sx={{ borderColor: newValue ? "divider" : "error.main" }}
+				readOnly={props.readOnly ?? false}
+			/>
+		</Stack>
+	);
+}
diff --git a/src/pages/edit/Editor/renderer/Node/components/Const/value.ts b/src/pages/edit/Editor/components/ValueEditor/value.ts
similarity index 76%
rename from src/pages/edit/Editor/renderer/Node/components/Const/value.ts
rename to src/pages/edit/Editor/components/ValueEditor/value.ts
index 45eb314..06051fc 100644
--- a/src/pages/edit/Editor/renderer/Node/components/Const/value.ts
+++ b/src/pages/edit/Editor/components/ValueEditor/value.ts
@@ -1,6 +1,6 @@
 import { chunk } from "es-toolkit";
-import type { CCIntrinsicComponentConstSpecConfigViewMode as Mode } from "../../../../../../../store/intrinsics/types";
-import type { SimulationValue } from "../../../../../../../store/simulation";
+import type { CCIntrinsicComponentConstSpecConfigViewMode as Mode } from "../../../../../store/intrinsics/types";
+import type { SimulationValue } from "../../../../../store/simulation";
 
 const bitsPerHexDigit = 4;
 const bitsPerByte = 8;
@@ -23,7 +23,10 @@ function padBits(bits: SimulationValue, unit: number): boolean[] {
 	return [...Array<boolean>(padding).fill(false), ...bits];
 }
 
-export function formatConstData(data: SimulationValue, mode: Mode): string {
+export function formatSimulationValue(
+	data: SimulationValue,
+	mode: Mode,
+): string {
 	switch (mode) {
 		case "binary":
 			return data.map((bit) => (bit ? "1" : "0")).join("");
@@ -42,7 +45,7 @@ export function formatConstData(data: SimulationValue, mode: Mode): string {
 }
 
 /** Returns null if `text` is not a valid representation in `mode`. */
-export function parseConstData(
+export function parseSimulationValue(
 	text: string,
 	mode: Mode,
 ): SimulationValue | null {
@@ -66,3 +69,15 @@ export function parseConstData(
 		}
 	}
 }
+
+export function fitSimulationValue(
+	value: SimulationValue,
+	bitWidth: number,
+): SimulationValue | null {
+	const overflow = value.length - bitWidth;
+	if (overflow <= 0) {
+		return [...Array<boolean>(-overflow).fill(false), ...value];
+	}
+	if (value.slice(0, overflow).some((bit) => bit)) return null;
+	return value.slice(overflow);
+}
diff --git a/src/pages/edit/Editor/renderer/Node/components/Const/index.tsx b/src/pages/edit/Editor/renderer/Node/components/Const/index.tsx
index b7931c0..49a41bd 100644
--- a/src/pages/edit/Editor/renderer/Node/components/Const/index.tsx
+++ b/src/pages/edit/Editor/renderer/Node/components/Const/index.tsx
@@ -1,33 +1,10 @@
-import { Stack, styled, ToggleButton, ToggleButtonGroup } from "@mui/material";
-import { useState } from "react";
-import type {
-	CCIntrinsicComponentConstSpec,
-	CCIntrinsicComponentConstSpecConfigViewMode as Mode,
-} from "../../../../../../../store/intrinsics/types";
+import type { CCIntrinsicComponentConstSpec } from "../../../../../../../store/intrinsics/types";
 import { useStore } from "../../../../../../../store/react";
+import { CCComponentEditorValueEditor } from "../../../../components/ValueEditor";
 import { useComponentEditorStore } from "../../../../store";
 import type { CCComponentEditorRendererNodeRendererProps } from "../../types";
 import { CCComponentEditorRendererNodeDefaultRenderer } from "../Default";
 import { ccComponentEditorRendererNodeConstLayoutConstants as constants } from "./geometry";
-import { formatConstData, parseConstData } from "./value";
-
-const modes: Record<Mode, string> = {
-	binary: "Binary",
-	hex: "Hex",
-	"utf-8": "UTF-8",
-};
-
-const Editor = styled("textarea")(({ theme }) => ({
-	padding: theme.spacing(1),
-	flex: 1,
-	resize: "none",
-	borderStyle: "solid",
-	borderWidth: "1px",
-	borderRadius: theme.shape.borderRadius,
-	outline: "none",
-	fontFamily: "monospace",
-	wordBreak: "break-all",
-}));
 
 export function CCComponentEditorRendererNodeConstRenderer(
 	props: CCComponentEditorRendererNodeRendererProps,
@@ -36,27 +13,9 @@ export function CCComponentEditorRendererNodeConstRenderer(
 	const editorMode = useComponentEditorStore()((state) => state.editorMode);
 	const config = props.node.config as CCIntrinsicComponentConstSpec["config"];
 
-	const [text, setText] = useState(() =>
-		formatConstData(config.data, config.mode),
-	);
-	const [isInvalid, setIsInvalid] = useState(false);
-
 	const updateConfig = (newConfig: CCIntrinsicComponentConstSpec["config"]) =>
 		store.nodes.update(props.node.id, { config: newConfig });
 
-	const changeMode = (mode: Mode) => {
-		updateConfig({ ...config, mode });
-		setText(formatConstData(config.data, mode));
-		setIsInvalid(false);
-	};
-
-	const changeText = (newText: string) => {
-		setText(newText);
-		const data = parseConstData(newText, config.mode);
-		setIsInvalid(!data);
-		if (data) updateConfig({ ...config, data });
-	};
-
 	return (
 		<>
 			<CCComponentEditorRendererNodeDefaultRenderer {...props} />
@@ -67,32 +26,13 @@ export function CCComponentEditorRendererNodeConstRenderer(
 				height={props.geometry.rect.size.y - constants.padding * 2}
 				onPointerDown={(e) => e.stopPropagation()}
 			>
-				<Stack sx={{ height: "100%", gap: 0.5 }}>
-					<ToggleButtonGroup
-						value={config.mode}
-						onChange={(_, value) => {
-							if (!Object.hasOwn(modes, value)) return;
-							changeMode(value as Mode);
-						}}
-						exclusive
-						size="small"
-						sx={{ width: "100%" }}
-						disabled={editorMode !== "edit"}
-					>
-						{Object.entries(modes).map(([mode, label]) => (
-							<ToggleButton key={mode} value={mode} sx={{ flex: 1, p: 0.25 }}>
-								{label}
-							</ToggleButton>
-						))}
-					</ToggleButtonGroup>
-					<Editor
-						value={text}
-						onChange={(e) => changeText(e.target.value)}
-						spellCheck={false}
-						sx={{ borderColor: isInvalid ? "error.main" : "divider" }}
-						disabled={editorMode !== "edit"}
-					/>
-				</Stack>
+				<CCComponentEditorValueEditor
+					value={config.data}
+					onChange={(data) => updateConfig({ ...config, data })}
+					mode={config.mode}
+					onModeChange={(mode) => updateConfig({ ...config, mode })}
+					readOnly={editorMode !== "edit"}
+				/>
 			</foreignObject>
 		</>
 	);
diff --git a/src/pages/edit/Editor/renderer/Node/components/Interface/RenameButton.tsx b/src/pages/edit/Editor/renderer/Node/components/Interface/RenameButton.tsx
index 291f52e..27838c7 100644
--- a/src/pages/edit/Editor/renderer/Node/components/Interface/RenameButton.tsx
+++ b/src/pages/edit/Editor/renderer/Node/components/Interface/RenameButton.tsx
@@ -33,7 +33,7 @@ export function CCComponentEditorRendererNodeInterfaceRendererRenameButton(
 					setNewName(props.name);
 				}}
 			>
-				<Edit sx={{ width: "10px", height: "12px" }} />
+				<Edit sx={{ width: "10px", height: "10px" }} />
 			</IconButton>
 			<Popover
 				anchorEl={anchorEl}
diff --git a/src/pages/edit/Editor/renderer/Node/components/Interface/Value/EditButton.tsx b/src/pages/edit/Editor/renderer/Node/components/Interface/Value/EditButton.tsx
new file mode 100644
index 0000000..3b3d253
--- /dev/null
+++ b/src/pages/edit/Editor/renderer/Node/components/Interface/Value/EditButton.tsx
@@ -0,0 +1,54 @@
+import { Edit } from "@mui/icons-material";
+import { IconButton, Popover } from "@mui/material";
+import { useState } from "react";
+import type { CCIntrinsicComponentConstSpecConfigViewMode as Mode } from "../../../../../../../../store/intrinsics/types";
+import type { SimulationValue } from "../../../../../../../../store/simulation";
+import { CCComponentEditorValueEditor } from "../../../../../components/ValueEditor";
+
+type Props = {
+	value: SimulationValue;
+	onChange: (value: SimulationValue) => void;
+};
+
+export function CCComponentEditorRendererNodeInterfaceRendererValueEditButton(
+	props: Props,
+) {
+	const [anchorEl, setAnchorEl] = useState<HTMLElement | null>(null);
+	const [mode, setMode] = useState<Mode>("hex");
+
+	return (
+		<>
+			<IconButton
+				sx={{ width: "14px", height: "14px" }}
+				// Prevent the drag behavior of the parent node when clicking the button
+				onPointerDown={(e) => e.stopPropagation()}
+				onClick={(e) => {
+					e.stopPropagation();
+					setAnchorEl(e.currentTarget);
+				}}
+			>
+				<Edit sx={{ width: "10px", height: "10px" }} />
+			</IconButton>
+			<Popover
+				anchorEl={anchorEl}
+				open={Boolean(anchorEl)}
+				onClose={() => setAnchorEl(null)}
+				slotProps={{
+					root: { onPointerDown: (e) => e.stopPropagation() },
+					paper: { sx: { width: "300px", height: "120px", p: 1 } },
+				}}
+			>
+				<CCComponentEditorValueEditor
+					value={props.value}
+					onChange={(value) => {
+						props.onChange(value);
+						setAnchorEl(null);
+					}}
+					mode={mode}
+					onModeChange={setMode}
+					bitWidth={props.value.length}
+				/>
+			</Popover>
+		</>
+	);
+}
diff --git a/src/pages/edit/Editor/renderer/Node/components/Interface/Value/index.tsx b/src/pages/edit/Editor/renderer/Node/components/Interface/Value/index.tsx
index e197d38..e9de385 100644
--- a/src/pages/edit/Editor/renderer/Node/components/Interface/Value/index.tsx
+++ b/src/pages/edit/Editor/renderer/Node/components/Interface/Value/index.tsx
@@ -1,9 +1,7 @@
 import clsx from "clsx";
-import {
-	type SimulationValue,
-	wrappingIncrementSimulationValue,
-} from "../../../../../../../../store/simulation";
+import type { SimulationValue } from "../../../../../../../../store/simulation";
 import { stringifySimulationValue } from "../../../../../store/slices/core";
+import { CCComponentEditorRendererNodeInterfaceRendererValueEditButton } from "./EditButton";
 import styles from "./style.module.css";
 
 /** Values up to this bit width are shown bit by bit */
@@ -22,18 +20,16 @@ export function CCComponentEditorRendererNodeInterfaceRendererValue({
 	onChange,
 }: Props) {
 	if (value.length > maxBitWidthToShowBits) {
-		const label = stringifySimulationValue(value);
-		return onChange ? (
-			<button
-				type="button"
-				className={styles.text}
-				onPointerDown={(e) => e.stopPropagation()}
-				onClick={() => onChange(wrappingIncrementSimulationValue(value))}
-			>
-				{label}
-			</button>
-		) : (
-			<span className={styles.text}>{label}</span>
+		return (
+			<span className={styles.text}>
+				{stringifySimulationValue(value)}
+				{onChange && (
+					<CCComponentEditorRendererNodeInterfaceRendererValueEditButton
+						value={value}
+						onChange={onChange}
+					/>
+				)}
+			</span>
 		);
 	}
 
diff --git a/src/pages/edit/Editor/renderer/Node/components/Interface/Value/style.module.css b/src/pages/edit/Editor/renderer/Node/components/Interface/Value/style.module.css
index 1027f7f..70d2fc7 100644
--- a/src/pages/edit/Editor/renderer/Node/components/Interface/Value/style.module.css
+++ b/src/pages/edit/Editor/renderer/Node/components/Interface/Value/style.module.css
@@ -1,14 +1,10 @@
+/* The value in hexadecimal, followed by the edit button if editable */
 .text {
-	padding: 0;
-	border: none;
-	background: none;
-	color: inherit;
-	font: inherit;
-	text-align: center;
-
-	&:is(button) {
-		cursor: pointer;
-	}
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	gap: 2px;
+	font-family: monospace;
 }
 
 .bits {
diff --git a/src/store/simulation.ts b/src/store/simulation.ts
index a9e77c5..d17e82f 100644
--- a/src/store/simulation.ts
+++ b/src/store/simulation.ts
@@ -15,20 +15,6 @@ import type { CCNodePin, CCNodePinId } from "./nodePin";
 
 export type SimulationValue = boolean[];
 
-export function wrappingIncrementSimulationValue(
-	value: SimulationValue,
-): SimulationValue {
-	const result = value.slice();
-	for (let i = result.length - 1; i >= 0; i--) {
-		if (!result[i]) {
-			result[i] = true;
-			break;
-		}
-		result[i] = false; // carry the increment
-	}
-	return result;
-}
-
 export type SimulationFrame = {
 	componentId: CCComponentId;
 	nodes: Map<