Tag: 8701

4 matching upgrades

Showing 4 products.

StatusProductWhat it doesCompatibilityLinks
AvailableChecked Jul 30, 2026CBMretro MOS 8701 Replacementby CBMretro

Current hand-built replacement for the MOS 8701 clock generator in later PAL and NTSC Commodore 64 boards.

CBMretro exposed an in-stock add-to-cart path on 2026-07-30. The page says only that the board is for later C64 models and does not name assembly numbers or the C128. Confirm that the computer actually uses a socketed MOS 8701 and verify orientation before ordering or installation.

Sources
  • Commodore 64 Exact model
Sold outChecked Jul 30, 2026LumaTOLBby Francis Bernier

VIC-II interposer combining LumaFix video cleanup with a replacement C64 clock-generator circuit.

Protovision listed the PAL LumaTOLB at 25 EUR but temporarily unavailable with unknown delivery time on 2026-07-30. The current listing gives a three-year warranty and says the original timing chip need not be removed. Installation may require replacing the VIC-II heat shield with a larger one. A hands-on 2018 report says LumaTOLB does not work with C64 Reloaded MK2, although the separate original LumaFix does. No current NTSC order path was verified.

Sources
  • Commodore 64 Exact model
  • Commodore SX-64 Exact model
DiscontinuedChecked Jul 30, 2026SmaCK 8701 Clock Generator Replacementby mic72

Historical MOS 8701 replacement with automatic PAL or NTSC selection and an onboard switchable oscillator.

The maker's August 2021 AmiBay thread said that only a few units remained, and the thread is now closed. No current direct order path was verified. Inspect a used board for its solder-bridge configuration before relying on automatic motherboard selection.

Sources
  • Commodore 64 Exact model
  • Commodore 128 Exact model
DiscontinuedChecked Jul 30, 2026TOLB 8701 Clock Generator Replacementby TOLB project

Historical low-power MOS 8701 replacement with separate PAL and NTSC versions and an onboard oscillator.

The original AmiBay sales thread is closed and its seller account has been deleted. No current direct order path was verified. TOLB was sold in separate PAL and NTSC versions, so identify the fitted variant and motherboard video standard before installing a used unit.

Sources
  • Commodore 64 Exact model
  • Commodore 128 Exact model