Save your MSX-BASIC programs to cassette tape and give your Z80 access to a wide range of USB devices.Designed by Dino Boards in Australia
Description Relive the olden days of storing and loading programs onto cassette tapes. Experience the nostalgia of the old medium or perhaps find out what all the fuss was about. But if that is not …Read More…
Relive the olden days of storing and loading programs onto cassette tapes. Experience the nostalgia of the old medium or perhaps find out what all the fuss was about.
But if that is not enough for you, then use the other side of this kit and bring your MSX RC2014 build into the 90's with Universal Serial Bus. After updating your ROM images, you will be able to load and store via MSX-BASIC or MSX-DOS (NEXTOR) on:
But that's not all, you can also:
There are also plans to update the software to support keyboard, ethernet adapters, and other useful USB devices.
As described above this kit has 2 key features.
The cassette interface uses a conventional MSX design based around the LM311N Voltage Comparator. This little circuit will convert the 'analogue' signal from the cassette to a digital TTL signal
The USB interface use the cheap CH376S module. A module that handles the low level 12Mhz signals. The Z80 is still responsible for all the USB protocol encoding/decoding for various USB device classes - such as UFI for floppy and SCSI for Mass storage.
The CH376 does provide a high level interface for connecting to most common mass storage, but is limited and will not work through hubs. The MSX-DOS (NEXTOR) driver written does not use this feature of the chip, and instead uses the lower level USB protocol to implements the specific USB class for the attached storage device and will work though hubs, and support a wider range of devices.
These are a series of boards developed to achieve MSX+ compatibility.
The full kits includes everything you need (PCB, capacitors, IC sockets, CH376S module, connectors, and the ICs). Also includes a small Flash drive that's been tested and confirmed to work with the current software revision.
You need a ROM image released on or after
2023-10-21. You can find prebuilt images under the project's github releases.
The cassette part of the module, as it requires specific MSX signals will only work in conjunction with the full MSX on RC2014 kits.
The USB module and associated signal LEDS could in theory have the potential to work on a stock RC2014 - at this stage it will not. There has been no software developed for this configuration, nor any testing done to confirm no conflicts or other unknown issues.
Please note that this is a kit, produced by a non-professional (me) for hackers, DIYers' and retro lovers, to tinker with. I will do my best to answer any support questions you may have.
The level of USB compliance of the solution is determined by the quality of the USB driver software I have written for this kit - so there may be specific compatibility issues with untested devices. I have done my best to test with as many devices as possible. I will do my best to address any identified compatibility issues -- but there can be no guarantees. The supplied USB thumb drive has been confirmed to work with the latest MSX rom build.
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