Machine Library - blame (d90362)

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ebe99f	Bob Green	2026-03-19 08:31:29

# Machine Library

I've created a library targeting the hardware specific aspects of programming the Sbc-3. I believe that it should work with the other boards from [Mega Micros](https://mega-micros.co.uk/index.htm), but since I don't have access to anything but the Sbc-3, can't confirm that.

To use the library, just include the following in your C sourcecode:

```c

#include <machine.h>

```

2a20d4	Bob Green	2026-03-21 15:03:23

## Serial I/O

## LED Control

There's a block of 10 leds (LD7 on the SBC3-b3), and six of them can be used for anything you like. Led1 is furthest from the cpu:

d90362	Bob Green	2026-03-21 15:03:37

2a20d4	Bob Green	2026-03-21 15:03:23

| LED # | Used for |

|:------|:---------|

| 1     | Indicates that the board is being powered via an external 5v supply. |

| 2     | Indicated that the board is being powered via the ATX power connector. |

| 3 | Connected to the ~RTS pin on the duart channel B. |

| 4 | Connected to the ~RTS pin on the duart channel A. |

| 5 | Available to user. |

| 6 | Available to user. |

| 7 | Available to user. |

| 8 | Available to user. |

| 9 | Available to user. |

| 10 | Available to user. |