COMMODORE-64 Pi1541 FDD EMULATOR with TURBO FILE BROWSER CARTRIDGE

Hello,

This is a tested and working project.

COMMODORE-64 Pi1541 ZERO FDD EMULATOR with TURBO FILE BROWSER Cartridge is an Easy DIY project, all components are through hole, marked on the PCB, Easy to solder, Easy to make ;)

This PCB is a combination of two independent projects, one of them is Pi1541 (Commodore disk drive emulator) and the other is Commodore-64 64KB Magic Desk Compatible Cartridge. They can be used separately or both together.

The cartridge part (27c512 eprom) contains CBM Filebrowser V1.6 11x Turbo Pi1541 Edition   [2022]

https://csdb.dk/release/?id=223021

Pi1541 is a real-time, cycle exact, Commodore 1541 disk drive emulator. You can load and save commodore64 programs, D64 .PRG ... extensions games/software from a Micro SD card, it is an alternative to SD2iEC, please look at the Documentation link.

The source page link of this PCB drawing is below. (Option A)

https://cbm-pi1541.firebaseapp.com/

Many thanks to Stephen White for Pi1541. You can visit his site and make a donation.

If you want to use Pi1541 without being inserted into the cartridge port then you need to supply DC +5V power to the Pi.

Do not connect external power source to Raspberry Pi while it is inserted into Commodore 64.

Do not use HDMI output of Raspberry Pi with this Pi1541 HAT.

JP1 is for cutting the 5 Volts line between the Browser part and the Pi1541 part. In normal use, JP1 header cap is attached. If you remove the JP1 header cap, the Pi1541 will stop getting power from the Commodore.

You can download Binary Eprom Image and Pi1541 SD card files from the bottom of this page.

Many thanks to Marko Solajic for Magic Desk compatible Cartridge.

Many thanks to Feandreu for his contribution in this project.

COMPONENTS for Pi1541 part:

Raspberry Pi Zero or Pi Zero2W

Fat32 formated Micro SD Card

6 pcs. Right-Angle Tactile Push Button (Buttons #1 , #4, #5 are Optional)

4 channel. bidirectional logic level converter

6 pin Male DIN Connector

6 PCS. 30cm Male-Female Duppond Cable

0.96 Inch Oled Display (Optional. Isolate the back side of the OLED display from touching the PCB solder points.)

2x20 pin Female header (2.54mm Pitch)

Passive Piezo buzzer HPM14AX or similar (Optional. Pi-Zero 1541 currently does not support buzzer function.)

2pin 2.54mm male header (for JP1)

Header jumper cap (for JP1)

470 ohm 1/4watt RESISTANCE (value changes leds brigtness)

Red LED

COMPONENTS for BROWSER CARTRIDGE part:

27C512 or W27C512 (DIP28)

DIP28 WIDE IC SOCKET (for eprom)

74LS02 or 74HC02 DIP14

74LS273 or 74HC273 DIP20

You will need a programmer for 27c512 EPROM

Please choose "Edge connector YES and Bevelling Yes (45°)

If you want to use (optional) OLED display ;

Do not forget: solder 2 x 20 pin female header before OLED display :)

Isolate the back side of the OLED display from touching the PCB solder points.

SETTINGS FOR OLED DISPLAY PIN ORDER:

For VCC-GND-SCL-SDA Displays; short VCC + VCC

For GND-VCC-SCL-SDA Displays; short GND + GND

At the back of this PCB.

If you have a programmer capable of testing IC chips, such as the 74LS series, you should remember to test them before soldering. Some chips may be defective. (TL866 Minipro Programmer can test some logic ICs)

In order to protect your electronical devices, always turn off your Commodore before connecting or disconnecting the cables or any other device.

** If you want to use Pi1541 not inserted to the C64 cartridge port then you need to provide DC +5V power to the PCB. (DO NOT CONNECT EXTERNAL POWER SOURCE TO THIS PCB WHILE IT IS INSERTED TO COMMODORE 64! )

While transfering data (reading or writing) from SD cards it should not be interrupted like power-off or Reset systems. Otherwise that may damage SD cards.

Gerber files and component list are subject to change without notice. Before paying for the PCBs, be sure to update your orders!

As you can see I have uploaded many projects and I am still working on new projects. If you have any questions, please look for answers online. Unless I specify explicitly, all my projects are tested and confirmed to work under normal circumstances before being shared. I'm sorry I didn't have enough time to answer all the questions.

Use this PCB at your own risk !

Have fun

Thank you.

C64iSTANBUL