| Yet Another 6809 SBC [message #10377] |
Tue, 22 August 2023 21:14  |
doctorwkt
Messages: 1
Registered: May 2020
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Junior Member |
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Hey all, after a few months of work I've got a working 6809 SBC. This one is slightly different as the software side is very Unix-like. The project is at Github, search for DoctorWkt/Nine-E.
On the hardware side, there is:
- a 6809 CPU,
- 8K of ROM,
- 54K of RAM,
- a UART, and
- access to a USB key for disk storage.
On the software side:
- the xv6 filesystem code resides in ROM,
- the libc and include files come mostly from Fuzix,
- the userland applications come from Fuzix, Minix 1.5 and xv6.
There is no MMU and no clock device, so there isn't any multitasking (i.e. no fork( , exec(, time(. Apart from that, what is able to work is pretty impressive.
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