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Put system information in env. variables

   Author:       larsonmars at email.de (Lars Stockmann)
   Uploader:     larsonmars email de (Lars Stockmann)
   Type:         util/boot
   Version:      0.9
   Architecture: m68k-amigaos >= 1.3
   Distribution: Aminet
   Kurz:         Legt System infos in Umgebungsvariablen
   Date:         2023-10-26
   Readme:       http://aminet.net/util/boot/sysvars.readme
   Downloads:    152

http://aminet.net/util/boot/sysvars.lha

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https://github.com/larsonmars/sysvars

sysvars is a small CLI tool for the Amiga that creates several environment

variables holding valuable system information. These variables can be used,

for example, in the startup-sequence to enable/disable certain patches,

assigns, and so on.

The following variables are Set

CPU: installed CPU, for example 68030 (see NOTES for OS 1.3)

FPU: installed FPU, one of 68881, 68882, internal (for non-LC/EC 040 and

060 CPUs), or empty if no FPU is available (see NOTES for OS 1.3)

Chipset: installed graphics chipset, one of OCS, ECS, AGA

VFreq: the vertical frequency of the native display, can be either 50 (PAL

50Hz) or 60 (NTSC 60Hz)

UAE: The version of UAE detected, empty if UAE was not detected

_____________________________________________________________________________

NOTES

- On OS 1.3, CPUs > 68020 are currently detected as 68020 and FPUs are detected

as 68881

- 68080 (Vampire) support for the CPU is experimental, I do not own one, so I

cannot test it

- SAGA (Vampire) support is not yet available. I do not own one, so I do not

know what VPOSR might be on the Vampire.

- UAE is detected via the uae.resource, which is only there if a virtual hard

drive or another UAE expansion to be enabled. Thus, detection will fail on

floppy-only-unexpanded Amiga configurations

- The tool currently requires at least dos.library version 36 (Amiga OS 2.x)

due to the use of SetVar. OS 1.3 support will be considered in a future

version (using an alternative for the SetVar calls).

_____________________________________________________________________________

WHY SUCH A TOOL?

As many Amiga users, I have multiple Amigas, booting from flash memory.

However, I do not want to maintain multiple operating system configurations.

In the past, I have used several tools to branch during startup, which

yielded a complex startup-sequence/user-startup and an extended boot time.

I wanted a small fast utility that gives me neat environment variables, so I

can write something like this in the startup-sequence:

IF $CPU GE 68020

MCP

ENDIF

IF $FPU EQ internal

FastIEEE

ENDIF

Also, I always wanted to learn M68k assembler. After 30 years using an Amiga

this was about time!

_____________________________________________________________________________

FUTURE PLANS

The tool is already quite useable, but there are still some things missing,

which I want to fix in future versions:

- Add memory-related variables, such as Chipmem, Fastmem, and Slowmem

(especially to distinguish Amiga 5000 trapdoor/slow memory from actual

Z2/Z3 Fast memory)

- Add RTG variable to enable/disable stuff like FBlit or swap screen mode

configurations

- For OS 1.3: add detection for CPUs > 68020 and at least the 68882

- Add full support for Vampire

_____________________________________________________________________________

LICENSE

The code is licensed under the MIT License

_____________________________________________________________________________

RELEASE HISTORY

Version 0.9:

- Added limited OS 1.3 Support (CPU/FPU detection up to 6802/68881) via a

custom SetVar implementation (setenv-like functionality)

- small code improvements

Version 0.8:

- Initial Release on GitHub and Aminet

Contents of util/boot/sysvars.lha

PERMISSION  UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP     NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[unknown]                 4861   14831  32.8% -lh5- a4e3 Oct 26 08:53 source/sysvars.S
[unknown]                  690     976  70.7% -lh5- 1e22 Oct 26 08:53 sysvars
[unknown]                 1808    4146  43.6% -lh5- 5abf Oct 26 08:53 sysvars.readme
---------- ----------- ------- ------- ------ ---------- ------------ ----------
 Total         3 files    7359   19953  36.9%            Oct 27 02:32