C64 Assembly 250469

• Released in 1987.
• 8-pin board.
• Version: E.
• Schematic Number 252311, 252312.
• Fully redesigned motherboard. Commonly known as the “Short Board”.
• Fully redesigned case. Known as the C64C.
• New IC memory controller (U8).
• New HMOS chipset.
• 64-pin PLA known as the “SuperPLA”.

• CPU : 6510 @ 1.0227277143 MHz (NTSC) / 0.9852484444 MHz (PAL)
• RAM : 64kB DRAM
• ROM : 20kB ROM Total - 8K BASIC, 8K Kernal, 4K Character
• Graphics : VIC-II
• Sound : SID
• Interfaces : 2 Control Ports (CIA U1), A/V, Datasette Port (CIA U1), Expansion Port, Serial IEC (CIA U2), TV RF, User Port (CIA U2)
• Keyboard : 66 Keys (CIA U1)
• Power Supply : External Transformer (9V AC + 5V DC)

Fig. 1: C64 250469 Mainboard Fig. 2: C64 250469 Layout

Cap  -  Value   - Rating - Type
C36  -  47uf    -  16v   - Radial
C43  -  220uF   -  16v   - Radial
C44  -  2.2uf   -  50v   - Radial
C58  -  100uF   -  16v   - Radial
C59  -  4.7uF   -  25v   - Radial
C63  -  1000uF  -  25v   - Axial
C65  -  220uF   -  25v   - Radial
C66  -  470uf   -  25v   - Radial
C77  -  10uf    -  25v   - Radial