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apple1-videocard-lib
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Update README.md

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nino-porcino 2022-03-30 11:57:03 +02:00
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demos/sdcard/README.md
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@ -12,12 +12,14 @@ indicates the file type (two characters) and the hex loading address (4 characte
`#06` for plain binary files
`#F1` for BASIC programs
`#F8` for Applesoft BASIC lite programs
E.g.:
`BASIC#06E000` is binary file named `BASIC` that loads at address `$E000`.
`STARTREK#F10300` is a BASIC program named `STARTREK` that loads at address `$0300`.
`LEMO#F80801` is a AppleSoft BASIC program named `LEMO` that loads at address `$0801`.
Tagged file names are used by the `LOAD`, `RUN`, `SAVE` and `DIR` commands to simplify working with files. For example to execute the above files, it's enough to type:
Tagged file names are used by the `LOAD`, `RUN`, `SAVE`, `ASAVE` and `DIR` commands to simplify working with files. For example to execute the above files, it's enough to type:
```
LOAD BASIC
@ -51,6 +53,10 @@ RUN STARTREK
Saves a file to the SD card. If `start` and `end` are specified, a binary file with tag `#06` will be created with the memory content from the address range `start`-`end` (included).
If `start` and `end` are not specified, the BASIC program currently loaded in memory will be created with the corresponding `#F1` tag.
`ASAVE filename`
Saves a AppleSoft BASIC lite file to the SD card. The program currently loaded in memory will be created with the corresponding `#F8` tag.
`RUN filename`
Same as `LOAD` but runs the file after loading it. Binary files are exectuted at the starting address specified in the file name tag; BASIC files are `RUN` from the BASIC interpreter.
@ -87,9 +93,14 @@ RUN STARTREK
Prints `LOMEM` and `HIMEM` pointers from the BASIC program currently loaded in memory.
`JMP address`
`address R`
Makes the CPU jump at the specified address.
Runs the program loaded at the specified memory address. Useful addresses:
`6000R` AppleSoft BASIC cold start (needed at least once)
`6003R` AppleSoft BASIC warm start (do not destroy the BASIC program in RAM)
`E000R` Integer BASIC cold start
`EFECR` Integer BASIC "RUN" command (can be used as a warm entry point)
`8000R` SD card OS command prompt
`TIME value`