Commodore bus

Commodore serial
Type Peripheral bus
Production history
Designer Commodore International
Designed 1980; 44 years ago (1980)[1]
Manufacturer Various
Produced 1980–present
General specifications
Length 1.8 meters maximum[2]
Hot pluggable No
Daisy chain Yes, up to 31 devices[3]
External Yes
Pins 6
Connector DIN connector
Electrical
Signal Open collector 5 V
Max. voltage 5 V
Max. current 3.2 mA[4]
Data
Data signal Yes
Bitrate 3.2–41.6 kbit/s[5][6]
Protocol Serial
Pinout
Female socket from the front.
Pin 1 SRQ Service Request
Pin 2 GND Ground
Pin 3 ATN Attention
Pin 4 CLK Clock
Pin 5 DATA Data
Pin 6 RESET Reset

The Commodore serial bus (IEC Bus), is Commodore's interface for primarily magnetic disk data storage and printers for Commodore 8-bit home computers: the VIC-20, Commodore 64, Commodore 128, Plus/4,[7] Commodore 16, and Commodore 65.

  1. ^ "Commodore VIC-20 History". Archived from the original on 2015-02-14. Retrieved 2016-04-02.
  2. ^ "Building the XE1541 serial cable". Retrieved 2016-04-02. (1) 6' or 1.8 meters (max) 4 conductor shielded cable (for serial connection)
  3. ^ Cite error: The named reference cb64 was invoked but never defined (see the help page).
  4. ^ "6526 complex interface adapter (CIA)" (PDF). 2016-03-04. Archived from the original (PDF) on 2016-04-10. Retrieved 2016-04-02. Output Low Current (Sinking); VOL < .4 v (PA0-PA7, PC, PB0-PB7, DB0-DB7) IOL 3.2 mA
  5. ^ Cite error: The named reference ieee85 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference zm71p01 was invoked but never defined (see the help page).
  7. ^ "Using Commodore 1541 disk drive on a Commodore + 4". 2005-10-03. Retrieved 2016-05-15. The 1541 works with the Plus/4 just fine.