Warn user when saving config where total blocks configured exceeds maximum provided by detected SD card

[GSuser007]

when setting up say an 8GB SD with X Drives
it didn't like tell me my setup was larger then the SD.
So when I had 32MB for 1 and 4GB for 2 and 4GB for 3 and 4GB for 4.
this would be 12GB+32MB which was bigger then the SD.
OOps I was not thinking, why didn't this tell me I did have the right size.

[morio]

We currently have two spins SCSI2SD utils. The original Linux/Windows/macOS tool using wxWidgets and that definitely does not check size limits. There may actually be a use case where someone might want to assign larger limits that the SD card supports. For example on the v3-v5.x boards the configuration lives on the MCU so a user might want to swap SD cards when they are only reading and writing to the first couple of devices with a smaller card. But then put in a larger SD card when they want to read and/or write to the devices in a higher address range. For example an OS with a DVD inserted and an OS without a DVD inserted

Granted a warning might be nice in this case, but the original developer codersrc does this work in his free time so it really isn't a priority.

V6 configuration lives on the last two blocks of the SD card, so it makes a lot more sense to do size checking here because someone could potentially overwrite the configuration.

Finally Rabbit Hole Computing is actively developing an Objective-C tool that current only works with macOS for both the PSoC version (v3-v5) and a sister util for v6. Which I believe will include size checking already or soon.

If you would like to see it in the original Util sooner than later, please submit a pull request with your code changes. The code base is written in C++.

Otherwise just calculate the last block of your setup and make sure it is one less then block count on a v5 or earlier or 3 less on a v6 and you won't run into this problem. And save your configuration to an xml file with the card size and manufacturer name (different SD card manufactures have different block counts for the same size, a 16GB SanDisk has a different block count than a 16GB Kingston) , then you can play around with emulated SCSI devices sizes on the SCSI2SD without going over your hard limit