| New DOS/65 Release - Version 3.20 [message #10311] |
Tue, 04 April 2023 13:26 |
floobydust
Messages: 9
Registered: September 2020
Location: Boynton Beach, FL
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Junior Member |
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All, I've finished a new CMOS version of DOS/65 - Version 3.20.
This version is smaller and faster, uses less memory space, eliminates all removable media specific code, eliminates all track and sector accesses (and the translation layers in PEM and SIM) and uses Record based disk access. A new SIM version provides blocking/de-block for read/write against LBA addressed media (512-byte blocks). SIM reduces block reads as there are 4 Records per block, and manages delayed block write to improve write performance.
There's a full description of the hardware and software for a 3.3-volt 65C02 system that this new DOS/65 release was developed on as well.
Everything is on my Github page at: https://github.com/floobydust/CO2-Pocket-SBC-2.5
A PDF file has a more in-depth description and all source code is heavily commented.
Regards, KM
https://github.com/floobydust
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