User guide

1541 Ultimate User Manual

http://www.1541ultimate.net/

RUN/STOP Exit the active screen, brings you eventually back to the

Commodore computer itself.

If you enter any other key alpha/numeric key, it will activate the QUICK SEEK function.

The 1541 Ultimate’ User Interface will assume that you are typing (a part of) a filename,

and based on that try to find the first entry that has the identical filename within the

current directory. You can enter a question mark (?) within the filename as a wildcard, if

you’re unsure of the character in that position of the filename.

In cartridge mode the default behavior of the left button is to Reset the Commodore

computer, and the right button is used to activate the Freeze function of the selected

cartridge. You can swap these button assignments from the appropriate option in the

configuration menu.

Pressing all three buttons simultaneously will perform a hard reset.

Standalone mode

Since the 1541 Ultimate is NOT inserted into the cartridge port, it can’t draw power from

the Commodore computer, rendering it useless. So, in this mode you need a +5V DC,

250mA, PSU, and the easiest way to supply it to the 1541 Ultimate is to use the

appropriate pin on the USB connector. There are reports of people using a cable

connected to the cassette port connector to get the +5V from the Commodore to the USB

interface. This probably will work, but only if the C64’ PSU has sufficient capacity. A

PSU for standalone mode is NOT included, and at present is not available. By connecting

a USB cable from your PC to the 1541U, it will draw power from the PC.

The 1541 Ultimate will behave as a normal 1541 drive, accepting standard commands.

Since you need to be able to browse the SD card, and perhaps mount images from it, the

SD-IEC drive is always on as well. You can (dis)mount images from the SD Card

through special commands that you need to send to the SD-IEC drive (or the 1541

emulated drive), which is accessible through it’s own drive number.

In standalone mode the three buttons of the 1541 Ultimate have special assignments

which differ from the Cartridge mode.

Pressing left button: see CRSR UP in cartridge mode

Pressing middle button: see RETURN in cartridge mode

Pressing right button; see CRSR DOWN in cartridge mode

Pressing and Holding down left button: Jump to first entry

Pressing and Holding down middle button: Leave (sub)directory

Pressing and Holding down right button: Jump to last entry

Each of these functions can be combined with load”$”,x (where x is to be replaced by

the drive number of the 1541U’s normal drive) to get the actual directory. It is probably