Home » RBC Forums » General Discussion » Multicomp 6809 and the Serial Ports
| Re: Multicomp 6809 and the Serial Ports [message #7625 is a reply to message #7622] |
Sun, 10 May 2020 17:41  |
computerdoc
Messages: 130
Registered: October 2015
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Senior Member |
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Hi David,
Neal just reminded me what needs to be done to increase the online storage on the SD Card for NitrOS9. Then I realized what I did to
create the 4 - 1GB partitions for the Coco3FPGA which is very different from what is needed on the Multicomp09 v1.10 board SD card
setup which is the last version of the Multicomp09 board that I built.
The SD Card setup for the Coco3FPGA has only 1 NitrOS9 Operating system with 4 - 2MB disk drives so there are no other software systems
to be concerned about getting overwritten when enlarging the 4 disk descriptors to create larger disk drive images on the SDHC card.
Whereas, the Multicomp09 SD card has 7 different software packages / operating systems specifically placed on that SD card which are
Camelforth, Microsoft Extended Color Basic, Flex09, Buggy - a 6809 monitor with among other things an inline assembler / disassembler,
Cubix, NitrOS9 and Fuzix. These 7 software systems are located on the SD Card in that specific order.
As you know, the Multicomp09 at power-on boots into Camelforth 1st. From Camelforth, the other 6 software packages / operating systems
can be called using 1 of 6 key words specifically written to transfer control of the Multicomp09 to 1 of the other 6 software systems.
To enlarge the 4 Disk Drive Images in NitrOS9, new locations for the 2nd, 3rd and 4th drives must be calculated so the 2nd, 3rd and 4th
Disk Descriptors and the build scripts both can be updated with the new calculated locations. In addition, new updated and resized disk
drive image files have to be created corresponding to each of the 4 disk descriptors.
So what I need to do, is revisit the Multicomp09 build scripts to make sure I'm remembering all this correctly and begin making the
calculations. Many steps are needed to be updated to make sure the larger disk images are in the correct places on the SDHC card where
the updated Disk Descriptors expect them to be.
In addition to all that, Fuzix has to be moved further into the SD card so it does not overwrite the new resized NitrOS9 disk drive
images previously written by the build scripts as Fuzix is the last operating system to be written to the SDHC card when the build
scripts are executed. Remember, the 4 resized disk drive image files have to be created for NitrOS9 before the build scripts can be run.
Please give me some time to work this long process into my daily life which has also changed considerably since my Multicomp09 days.
I will need to know what new size you desire for the 4 disk drives in NitrOS9. I may need other information as the process progresses.
In answer to your request, the last version of "Preparing Terasic DE-1 & SD Card for Self-booting NitrOS-9.pdf" for the Coco3FPGA I wrote
is attached for you to peruse and enjoy.
Note: Please do NOT use this setup guide unless you have a fully functional Coco3FPGA platform.
This is just to give you some idea of what is involved with a portion of the process to enlarge the 4 NitrOS9 disk drives. Once the new SD
card image is built, I will get back to you.
Oh, by the way, I will need to know what additional software you wish to have on the 2nd, 3rd and 4th disk drives in NitrOS9. As there is no
way to connect to the internet in this version of NitrOS9, to add, change or update any of the software packages on the 4 disk drive images
as of the last time I used my Multicomp09 boards, is to recreate the 4 disk drives' image files and rebuild the SD card image file.
I remember having a lot of fun working with Neal during the development process and testing of the Multicomp09 hardware as well the software.
Fell free to ask questions any time. Well, that is all I have for the moment. Take care my friend!
Kip
Kip Koon
computerdoc at sc dot rr dot com
http://www.cocopedia.com/wiki/index.php/User:Computerdoc
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