===== Overview =====
Revived my Amiga 500, after 20 years. Samsung monitor has a scart connector, just right for the Amiga. I got a serial connection between Linux<->Amiga setup, and can transfer adf disk images to the Amiga, directly writing them to df0.

===== Canonical Amigashell commands =====

^command ^ meaning ^
|endcli  | ends current terminal session |
|cd /    | return to root directory |
|dir     | directory listing |
|status  | processlist ('ps ax' on Linux) |
|break 2 | ends process 2, "break 2 all" sends all break commands |

===== File transfer via AmigaBasic =====
This follows one of the ideas from [[http://www.boomerangsworld.de/cms/vc/amiga_transfer.html|here]], and copies the AmigaBASIC interpreter to the ramdisk.
<code>
cd/
copy c/copy ram:
copy c/dir ram:
# change disk to Basic disk
cd df0:
ram:dir
ram:copy AmigaBASIC ram:
</code>

===== File transfer via serial =====
  * http://www.boomerangsworld.de/cms/vc/amiga_transfer.html - transfers
  * First step: attach a serial nullmodem line. Execute "echo hello-amiga >/dev/ttyUSB0" on Linux, and "type SER:" on the Amiga, ensure you see "hello-amiga".
  * Next: download and compile [[http://www.boomerangsworld.de/cms/apccomm/usage.html|apccomm]]
  * Then, use receive.bas and AmigaBASIC to transfer apccom-nogui to the Amiga. After that, it can be used to do transfers via serial and directly write images to disks. I use an Amiga500 with memory extension, so 1MB RAM.

<code>
### pc
apccomm -s /dev/ttyUSB0 --speed 19200 Stateart.adf

### Amiga
# Boot workbench, execute shell
copy c/copy ram:
copy c/dir ram:
# put the disk containing apccom-nogui in the drive (I use the Basic disk)
ram:copy df0:apccom-nogui ram:
# put the workbench disk in the drive
apccom-nogui --serial --speed 19200 -d
</code>

===== Ideas/problems =====
  * external floppy not working: 
    * workbench reports "DF1:BAD", sysinfo reports that the disk is not recognized. Opening it, nothing obvious sticking out. Head is not moving back/forward, but does these "small moves" when no disk is in the drive.
    * Cleaned the axis used for motor movements, use WD-40 contact cleaner on contacts. Now, inserting a floppy, it spins up but never stops. The head is moved to most inner track. systest says "No READY signal: PC or Escom drive?" and "No Track 0: Drive not Present?"
  * power brick: high pitch noise. 
    * Opened it up (the 4 screw holes were covered with solid plastic, I had to get that out with screws), but no obvious issues like bended capacitors can be seen.
    * Got a hint that the coils might be the issue, they start to oscillate. Fixing them with hotglue should help.
    * Idea for next debug session: run it while case is open. Form a tube with paper, start a spectrograph app on the mobile phone, point the tube at various components and try to locate the one emitting the noise
    * replace inner pieces of the current power brick with new power supply, i.e. "MEAN WELL RT-50B"
    * https://retrousbpower.com/
  * amiga: should open it up and watch for issues like leaking caps
  * retrowhitening should be done :)
  * for cleaning:
    * isopropylalcohol
    * silicone grease/silikonfett, to lubricate
    * contact cleaner/Kontaktspray, i.e. WD-40 Kontaktspray

===== links =====
  * http://www.stoeggl.com/amiga/
  * https://github.com/BlitterStudio/amiberry - Amiberry, for emulation
  * https://whdload.de/ - allows harddisk installation of games/demos which are intended for floppy. Also c't 23/8 featured whdload