18-10-2023, 03:43 PM
From my recent purchase of Microbee material there was a document titled Notes on MicroBee 512k Software. It was A4 in size and 14 pages long. Scanned at 600pdi and converted to a searchable PDF as usual.
Written by Peter Broughton and sections are dated 27/5/86, 5/11/86, 6/1/87 and 3/4/87.
The 512k operating system is based on the standard 128k operating system. Briefly, some of the differences of this system are :
1. RAM disk of 414k, but no disk buffering.
2. The BDOS, shell ( SHELL.SYS ) and CCP ( CCP.SYS ) need only be loaded from disk once, thereafter they are stored in reserved memory and are reloaded almost instantly as required. This significantly reduces the time required for a warm boot.
3.The number and type of disk drives connected to the computer can be permanently stored in the system. This is especially useful to those who are using a combination of 5.25" and 3.5" disk drives.
I find the Peter Broughton system so much more versatile than the original Microbee system as I have a 3.5" and 5.25" mixed system. Its use with ubee512 emulator is great as the 414k M: drive is very useful for testing programs initially. Many of our disks in the Repository, where I have obtained the files individually and then put onto a disk image, boots up an early Peter Boughton system ver 1.2 as it can run on an original non-upgraded CIAB, std 128k or Premium 128k.
So in the MbeeTech Repository in the Microbee\Documentation\Articles\Technical folder we placed
peter_broughton_512k_software_notes.pdf
Written by Peter Broughton and sections are dated 27/5/86, 5/11/86, 6/1/87 and 3/4/87.
The 512k operating system is based on the standard 128k operating system. Briefly, some of the differences of this system are :
1. RAM disk of 414k, but no disk buffering.
2. The BDOS, shell ( SHELL.SYS ) and CCP ( CCP.SYS ) need only be loaded from disk once, thereafter they are stored in reserved memory and are reloaded almost instantly as required. This significantly reduces the time required for a warm boot.
3.The number and type of disk drives connected to the computer can be permanently stored in the system. This is especially useful to those who are using a combination of 5.25" and 3.5" disk drives.
I find the Peter Broughton system so much more versatile than the original Microbee system as I have a 3.5" and 5.25" mixed system. Its use with ubee512 emulator is great as the 414k M: drive is very useful for testing programs initially. Many of our disks in the Repository, where I have obtained the files individually and then put onto a disk image, boots up an early Peter Boughton system ver 1.2 as it can run on an original non-upgraded CIAB, std 128k or Premium 128k.
So in the MbeeTech Repository in the Microbee\Documentation\Articles\Technical folder we placed
peter_broughton_512k_software_notes.pdf
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ChickenMan
ChickenMan