diff --git a/src/core/DataType.test.ts b/src/core/DataType.test.ts
deleted file mode 100644
index aebf98b..0000000
--- a/src/core/DataType.test.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-import { describe, it, expect } from 'vitest'
-import { DataType, DATA_TYPE_INFO, getDataTypeInfo } from './DataType'
-
-describe('DataType', () => {
-  it('should have correct bit width for FP8', () => {
-    const info = getDataTypeInfo(DataType.FP8)
-    expect(info.bits).toBe(8)
-    expect(info.name).toBe('fp8')
-    expect(info.displayName).toBe('FP8')
-  })
-
-  it('should have correct bit width for FP16', () => {
-    const info = getDataTypeInfo(DataType.FP16)
-    expect(info.bits).toBe(16)
-    expect(info.name).toBe('fp16')
-    expect(info.displayName).toBe('FP16')
-  })
-
-  it('should have correct bit width for BF16', () => {
-    const info = getDataTypeInfo(DataType.BF16)
-    expect(info.bits).toBe(16)
-    expect(info.name).toBe('bf16')
-    expect(info.displayName).toBe('BF16')
-  })
-
-  it('should have correct bit width for FP32', () => {
-    const info = getDataTypeInfo(DataType.FP32)
-    expect(info.bits).toBe(32)
-    expect(info.name).toBe('fp32')
-    expect(info.displayName).toBe('FP32')
-  })
-
-  it('should have all data types in DATA_TYPE_INFO', () => {
-    expect(DATA_TYPE_INFO[DataType.FP8]).toBeDefined()
-    expect(DATA_TYPE_INFO[DataType.FP16]).toBeDefined()
-    expect(DATA_TYPE_INFO[DataType.BF16]).toBeDefined()
-    expect(DATA_TYPE_INFO[DataType.FP32]).toBeDefined()
-  })
-})
diff --git a/src/core/DataType.ts b/src/core/DataType.ts
deleted file mode 100644
index 62878d6..0000000
--- a/src/core/DataType.ts
+++ /dev/null
@@ -1,23 +0,0 @@
-export enum DataType {
-  FP8 = 'fp8',
-  FP16 = 'fp16',
-  BF16 = 'bf16',
-  FP32 = 'fp32',
-}
-
-export interface DataTypeInfo {
-  name: string
-  bits: number
-  displayName: string
-}
-
-export const DATA_TYPE_INFO: Record<DataType, DataTypeInfo> = {
-  [DataType.FP8]: { name: 'fp8', bits: 8, displayName: 'FP8' },
-  [DataType.FP16]: { name: 'fp16', bits: 16, displayName: 'FP16' },
-  [DataType.BF16]: { name: 'bf16', bits: 16, displayName: 'BF16' },
-  [DataType.FP32]: { name: 'fp32', bits: 32, displayName: 'FP32' },
-}
-
-export function getDataTypeInfo(dtype: DataType): DataTypeInfo {
-  return DATA_TYPE_INFO[dtype]
-}
diff --git a/src/layouts/BlockLayout.test.ts b/src/layouts/BlockLayout.test.ts
index c3ec8c1..9cfe5ec 100644
--- a/src/layouts/BlockLayout.test.ts
+++ b/src/layouts/BlockLayout.test.ts
@@ -1,11 +1,22 @@
 import { describe, it, expect } from 'vitest'
 import {
   identityStandardND,
-  calculateCoverage,
   createBlockLayout,
   getPositionsForThread,
 } from './BlockLayout'
 import { LinearLayout } from '../core/LinearLayout'
+import type { BlockLayoutParams } from '../validation/InputValidator'
+
+/**
+ * Test helper: Calculate the coverage of a block layout
+ * Coverage = sizePerThread × threadsPerWarp × warpsPerCTA for each dimension
+ */
+function calculateCoverage(params: BlockLayoutParams) {
+  return {
+    height: params.sizePerThread[0] * params.threadsPerWarp[0] * params.warpsPerCTA[0],
+    width: params.sizePerThread[1] * params.threadsPerWarp[1] * params.warpsPerCTA[1],
+  }
+}
 
 describe('BlockLayout', () => {
   describe('identityStandardND', () => {
diff --git a/src/layouts/BlockLayout.ts b/src/layouts/BlockLayout.ts
index 6fd1633..0cbf5d2 100644
--- a/src/layouts/BlockLayout.ts
+++ b/src/layouts/BlockLayout.ts
@@ -1,22 +1,6 @@
 import { LinearLayout } from '../core/LinearLayout'
 import type { BlockLayoutParams } from '../validation/InputValidator'
 
-export interface LayoutCoverage {
-  width: number
-  height: number
-}
-
-/**
- * Calculate the coverage of a block layout
- * Coverage = sizePerThread × threadsPerWarp × warpsPerCTA for each dimension
- */
-export function calculateCoverage(params: BlockLayoutParams): LayoutCoverage {
-  return {
-    height: params.sizePerThread[0] * params.threadsPerWarp[0] * params.warpsPerCTA[0],
-    width: params.sizePerThread[1] * params.threadsPerWarp[1] * params.warpsPerCTA[1],
-  }
-}
-
 /**
  * Create an N-dimensional identity layout with specified order
  *
diff --git a/src/main.tabs.test.ts b/src/main.tabs.test.ts
index 874ca80..58e0351 100644
--- a/src/main.tabs.test.ts
+++ b/src/main.tabs.test.ts
@@ -12,14 +12,11 @@ const mockParams: BlockLayoutParams = {
 const getParamsMock = vi.fn()
 const validateMock = vi.fn()
 const onSubmitMock = vi.fn()
-const onInputMock = vi.fn()
-
 vi.mock('./ui/ParameterForm', () => ({
   ParameterForm: vi.fn().mockImplementation(() => ({
     getParams: getParamsMock,
     validate: validateMock,
     onSubmit: onSubmitMock,
-    onInput: onInputMock,
   })),
 }))
 
@@ -430,8 +427,6 @@ describe('main tab switching', () => {
     validateMock.mockReturnValue(true)
 
     onSubmitMock.mockReset()
-    onInputMock.mockReset()
-
     projectionListeners.clear()
     tabActivationHandler = null
     subscribeMock.mockClear()
diff --git a/src/tabs/BlockLayoutTab.test.ts b/src/tabs/BlockLayoutTab.test.ts
index fbb0e70..4413312 100644
--- a/src/tabs/BlockLayoutTab.test.ts
+++ b/src/tabs/BlockLayoutTab.test.ts
@@ -9,7 +9,6 @@ type ParameterFormStub = {
   getParams: ReturnType<typeof vi.fn>
   validate: ReturnType<typeof vi.fn>
   onSubmit: ReturnType<typeof vi.fn>
-  onInput: ReturnType<typeof vi.fn>
 }
 
 const defaultParams: BlockLayoutParams = {
@@ -38,7 +37,6 @@ vi.mock('../ui/ParameterForm', () => ({
       getParams: vi.fn(() => currentParams),
       validate: vi.fn(() => validateResult),
       onSubmit: vi.fn(),
-      onInput: vi.fn(),
     }
     parameterFormInstances.push(instance)
     return instance
diff --git a/src/ui/ParameterForm.ts b/src/ui/ParameterForm.ts
index 3939f4c..4fca92e 100644
--- a/src/ui/ParameterForm.ts
+++ b/src/ui/ParameterForm.ts
@@ -128,16 +128,6 @@ export class ParameterForm {
     })
   }
 
-  /**
-   * Add event listener for real-time validation
-   */
-  onInput(callback: () => void): void {
-    this.form.addEventListener('input', () => {
-      this.validate()
-      callback()
-    })
-  }
-
   /**
    * Get number value from input
    */