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amisrec
=====================================
The program *amisrec* is a serial S-RECORD loader for the Amiga computer. It
loads a hex character coded S-RECORD file over the internal UART hardware. The
program is developed and tested on Amiga A1200 with Blizzard 1230 IV and will
probably work on any Amiga computer.
Features
--------
* The loader relocates itself to upper chip RAM.
* Supports S-RECORD types 2, 3, 4, 7, 8 and 9.
* Verifies record checksums.
* Polling UART with high baud (230400 on A1200).
* Program size is less than 500 bytes.
* Loads target program to any address as defined by the S-RECORD input.
User interface
--------------
Program output is just different screen colors.
* Black - Loader waits for byte to arrive on UART.
* Purple - Data is being processesed (character to byte conversion, checksum
calculation, memory write.)
* White - Load complete, waits for user to release mouse button.
* Red - An S-RECORD has checksum error.
Load input is controlled by the left mouse button. If left mouse button is
depressed during arrival of the first termination record, the loader waits for
button release before it boots into the loaded data. If the mouse button is
*not* depressed, the program boots immediately.
Usage example
-------------
Boot the Amiga from floppy with one of the `.adf` files or run one of the
executables (see *Binary distribution*).
On another computer, run:
`cat hello.srec > /dev/ttyUSB0`
Interesting extensions
----------------------
* View S-RECORD identifer o screen when loading
* Present progress visually (or aurally!)
* Detect Fast RAM and relocate there.
* Supply system (RAM) information in registers to the booted program.
Binary distribution
-------------------
* `brittmarie_512KiB_38400`
- Amiga executable
- Relocates just below address `$00080000`
- 38400 bps
* `brittmarie_2MiB_230400`
- Amiga executable
- Relocates just below address `$00200000`
- 230400 bps
* `brittmarie_512KiB_38400.adf`
- Amiga disk boot block
- Relocates just below address `$00080000`
- 38400 bps
* `brittmarie_2MiB_230400.adf`
- Amiga disk boot block
- Relocates just below address `$00200000`
- 230400 bps
License
-------
The program *amisrec* is licensed under GPL v3.
Contact
-------
`ma0@home.se`
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Contents of dev/cross/brittmarie.lha
PERMISSION UID GID PACKED SIZE RATIO METHOD CRC STAMP NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[generic] 1616 4262 37.9% -lh5- 727b Nov 6 20:04 brittmarie/brittmarie.s
[generic] 298 777 38.4% -lh5- f65a Nov 6 20:04 brittmarie/nibblemarie.s
[generic] 430 500 86.0% -lh5- ddbc Nov 6 20:04 brittmarie/out/brittmarie_2MiB_230400
[generic] 899 11264 8.0% -lh5- 42ea Nov 6 20:04 brittmarie/out/brittmarie_2MiB_230400.adf
[generic] 432 500 86.4% -lh5- 19fe Nov 6 20:04 brittmarie/out/brittmarie_512KiB_38400
[generic] 3741 11264 33.2% -lh5- d372 Nov 6 20:04 brittmarie/out/brittmarie_512KiB_38400.adf
[generic] 1034 2301 44.9% -lh5- 9387 Nov 6 20:04 brittmarie/README.md
[generic] 236 473 49.9% -lh5- b3d6 Nov 6 20:04 brittmarie/uartmarie.s
---------- ----------- ------- ------- ------ ---------- ------------ ----------
Total 8 files 8686 31341 27.7% Apr 21 21:21
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