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Update README.md
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bkw777 committed Jan 3, 2024
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Expand Up @@ -305,8 +305,19 @@ If you want to get fancy, you could support both model 100 and model 200 at the
4 ?".";:NEXT:SAVEM"RAM200",T,E,T
```

### Using RAMDSK
Usage is mostly pretty self-explanatory.

The F1-Bank button switches between 2 banks of 256k, and is only functional on a RAMPAC that has more than 256k.

[It is fairly common for the first byte to get corrupted](software/RAMPAC.001)
Don't Panic(tm)
You could do the manual BASIC one-liner `OUT129,0:OUT131,64:OUT131,4`, but RAMDSK also has a first-byte-fixer built-in.
If you get the "Format RAM-Disk?" prompt on power-on, just answer "N".
Then it will ask "Fix?", answer "Y".

## NBOOT
Just for reference, here is a more flexible and generic [NBOOT](software/NBOOT/) for any .CO file up to 2038 bytes.
Just for reference, to boot some other CO instead of RAMDSK, here is a more flexible and generic [NBOOT](software/NBOOT/) for any .CO file up to 2038 bytes.
* Reads the filename and address values from the file itself
* Works on any .CO file that fits in 2 blocks
2 blocks of 1k = 2048 bytes,
Expand All @@ -325,20 +336,6 @@ Just for reference, here is a more flexible and generic [NBOOT](software/NBOOT/)
8 N=INP(P):N=N+INP(P)*256:RETURN
```

This is just for reference to load some other CO file besides RAMDSK.


### Using RAMDSK
Usage is mostly pretty self-explanatory.

The F1-Bank button switches between 2 banks of 256k, and is only functional on a RAMPAC that has more than 256k.

[It is fairly common for the first byte to get corrupted](software/RAMPAC.001)
Don't Panic(tm)
You could do the manual BASIC one-liner `OUT129,0:OUT131,64:OUT131,4`, but RAMDSK also has a first-byte-fixer built-in.
If you get the "Format RAM-Disk?" prompt on power-on, just answer "N".
Then it will ask "Fix?", answer "Y".

## RAMPAC Inspector
[RPI.BA](software/RPI) is a small util to view the raw data from anywhere on the device.
There are already old apps for that like N-DKTR and RD, but they are large, include machine language, or require the original option rom or RAMDSK.CO, don't support 512k, etc.
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