This is an old post, preserved for reference.
The products and services mentioned within are no longer available.
This post has been left for historic information. The PET microSD is no longer in production. The replacement SD2PET is available now, more information on the pre-order page.Here are some general instructions for using the PET microSD. To start with you need a PET microSD, a Commodore PET IEEE-488 drive replacement which uses a microSD card.
fitting instructions for 80xx-SK models.
proper SD card format utility. Then copy on any .prg or .d64 files you want to use.
6502 ROM/RAM boards (which could also be used to give you an upgrade to 32K RAM as well).
- LOAD "test",8
- LOAD "$",8
- LOAD "*",8
- LOAD "inv*",8
- SAVE "hello",8
- DLOAD "filename"
- DSAVE "filename"
- OPEN 1,8,15,"command" : CLOSE 1
- OPEN 1,8,15,"CD/games" : CLOSE 1
- OPEN 1,8,15,"CD:image.d64" : CLOSE 1
- OPEN 1,8,15,"CD←" : CLOSE 1
- @ - get status
- @$ - get directory listing
- @command - run a command
- @cd/directory - change directory
- @cd:image.d64 - load a D64 image
- @cd← - return to parent directory / close disk image
- /filename - load a program
- ↑filename - load and run a program
- # - show the current device number being accessed (default is 8)
- #9 - change the device number being accessed (8-11)
This means there is a lot less to type, @$ shows a directory, as with the BASIC 4 DIRECTORY, this does not affect the currently loaded program.
more info on this text adventure.
@cd← As mentioned earlier, the .prg extensions can be hidden using an option. Without the dos wedge, the command you need is
- OPEN 1,8,15,"XE+" : CLOSE 1
- OPEN 1,8,15,"U0>"+chr$(9) : CLOSE 1
- OPEN 1,9,15,"U0>"+chr$(8) : CLOSE 1
- OPEN 1,9,15,"XW" : CLOSE 1
2022 Update: I have since designed a much nicer SD drive for a PET. The SD2PET is available from The Future Was 8 bit