Type | Peripheral bus | ||
---|---|---|---|
Production history | |||
Designer | Commodore International | ||
Designed | 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) 6' or 1.8 meters (max) 4 conductor shielded cable (for serial connection)
cb64
was invoked but never defined (see the help page).Output Low Current (Sinking); VOL < .4 v (PA0-PA7, PC, PB0-PB7, DB0-DB7) IOL 3.2 mA
ieee85
was invoked but never defined (see the help page).zm71p01
was invoked but never defined (see the help page).The 1541 works with the Plus/4 just fine.