![]() To Disk BASIC, all it knows it Tracks 0-34 each contain Sectors 1-8 and each sector is 256-bytes. I’m not quite sure what this implies, since if you mount such an image, Disk BASIC will still see and use the first part of it as a 35-track single sided floppy disk*. DSK file with more than 2880 sectors (as many as an 80 track quad density floppy could have) will be treated as a hard drive image. See the “ Disk Geometry Table for DSK Images (without header)” table on the CoCoSDC blog. The CoCoSDC decides what to do with them based on the size of the. DSK image files and mount them as if they are a floppy disk. DSK image file across Drivewire.ĬoCoSDC allows you to create. historically, that’s all anyone has ever used them on - even if the floppy was a virtual one contained on an RGB-DOS/HDB-DOS hard drive partition, or. The OS-9 utilities cobbler and os9gen were written to work on floppy disks. But, faster is faster. It’s number 1 I want to focus on. I can already do a complete OS-9 boot to a shell prompt in about 3 seconds. Number 2 is not a huge deal on a hard drive since 4.5K isn’t much space. Neither is number 3 since reading 18 sectors from a virtual floppy on the CoCoSDC is blazing fast. Faster booting, since copying from ROM would be faster than loading the 18 boot sectors from a floppy drive.A whole extra track of disk space on any boot disk.No need to write out the kernel boot track to a boot floppy (or virtual floppy). ![]() I ended the article by mentioning David Ladd’s exciting experiment to place the OS-9 boot track in ROM on a CoCoSDC interface. In the first installment, I discussed a bit about how the Radio Shack Color Computer boots OS-9 using the Disk BASIC “DOS” command. 2 – Added link to David Ladd’s experiment.Manually making a bootable NitrOS9 hard drive image – part 2 This entry was posted in CoCoSDC on Februby Allen Huffman. Nice! I just started setting my CoCo system back up, and will be trying this out soon. DSK image that you mount and then run a utility which will take care of the upgrade. Fixes a bug where drive motor could remain on when using a CoCoSDC and a real floppy controller at the same time. RUN Code to select and execute one of the virtual ROM banks has been rewritten to make it more compatible with various ROMs.These commands can now write to flash pages $FExx on a CoCo 3. DEF DW. You can now specify DriveWire baud rates.It will mount an image called “SDCEXP.DSK” and, if present, run “AUTOEXEC.BAS” from that image. EXP. A new “EXP” command has been added.Holding down SPACE on startup will bypass this. AUTOEXEC. If “AUTOEXEC.BAS” if found on a mounted disk image, it will automatically run on startup.Fuzix Installer Project (FIP): Tandy CoCo3 Specific.SDC-DOS is now up to version 1.14 and includes the following changes:.CoCoWares: The place to find all the Hardware, Software and Services currently available for the TRS-80 / Tandy Color Computer. ![]()
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