Cartridge - file management through MSX computers

By MFakaNemo

Supporter (8)

MFakaNemo's picture

22-09-2020, 14:03

hi peoples,

i have a Yamaha CX5M plus the Sony HBI-55 cartridge.
is there any way to get access to the stored data on the cartrige? my goal is to see/ list and to decide which files to delete on the cartrige. I also would like to know: is there any list, delete and formatting function for the cartridge? like msx basic commands? The regular pdf manual does not help on this.

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By NYYRIKKI

Enlighted (5595)

NYYRIKKI's picture

22-09-2020, 14:57

AFAIK there is no BASIC commands to handle it on CX5M. If there are some "files" they are in Yamaha custom format and your best bet is to use the program that was used to create them. All of the "list, delete and formatting" functions have been embedded in to these applications using the cartridge and are application developer specific. AFAIK no one has documented the different formats programs have used on these cartridges, but I bet they are really simple as the storage space is so limited.

If the programs don't do the trick for you, I guess you need to write your own routines to take a peek inside. Here are some BASIC-examples that help you to get started with RAW data reading / writing: http://map.grauw.nl/resources/hbi55.php

By MFakaNemo

Supporter (8)

MFakaNemo's picture

22-09-2020, 16:27

ok thank you. I use the YRM-102 cartridge and there is only a save option. given that these cartridges only have 4kb, it looks like the whole data is saved on them and when saving again, it all overwrites the existing data ?

By sdsnatcher73

Paragon (1149)

sdsnatcher73's picture

23-09-2020, 06:31

For YRM-102 that may indeed be the case. You could check the YRM-102 manual to see if that sheds any light on the situation. I tried the HBI-75 with a HB-F5’s memo firmware (in Japanese) but I was only able to read the cards (which seemed to contain Japanese names and phone numbers. Big smile

By sdsnatcher73

Paragon (1149)

sdsnatcher73's picture

23-09-2020, 06:43

I checked the YRM-102 manual, it seems to only support tape as storage. The YRM-502 manual (still hosted by Yamaha here, amazing support!) does shed some light on the situation. It has commands to save and load from SRAM using file names and talks about showing an updated directory after a save! Possibly the Sony software uses fixed file names per application in the firmware, especially because these machines also support saving basic programs (with filename) to SRAM so some directory seems to exist.