Description:
AMOSPro AGA Extension is an unofficial graphics extension for
AMOS Professional on AGA-equipped Commodore Amiga computers
(including A1200/A4000) and AGA-enabled WinUAE. It extends the
original AMOS editor and interpreter, without replacing them.
R82 / v0.13.27 provides 74 native AMOS commands and functions
(81 AP20 entries) for indexed AGA graphics and game development.
A Motorola 68020 or better is required for this version.
Main features:
- Indexed AGA screens with 2 to 256 colours
- Double buffering and back-buffer graphics
- IFF/ILBM image loading; palette import, save and editing
- RGB24 palette banks, fades and colour cycling
- Safe Blitter copy, fill and clear; Copper raster effects
- Plot, lines, rectangles, circles and text rendering
- AMCAF font-bank selection
- Keyboard, mouse and AGA-window cursor control
- Compressed AGAPIC image banks, capture, clipped drawing
- Fast Icons (16x16x8), CPU drawing and Chip Blitter cache
- Chip RAM CBlock capture, drawing and restoration
- Chunky-to-planar (C2P) graphics and direct IFF-to-chunky
loading, using AMOS DATA/WORK banks
New since the previously supplied R57 Aminet readme:
- 68020-optimized image and Fast Icon drawing/capture
- AGAPIC v2: optional embedded RGB24 palette and AGA
display ModeID, while retaining AGAPIC v1 reading
- AGAPIC v1/v2 source-rectangle drawing and clipping
- Palette operations by AMOS bank number:
Aga Bank Palette Init / Capture / Apply / Fade
- C2P Open, Convert, Close, Blit and Zoom functions
(nearest-neighbour zoom, explicit Convert and Swap)
- Aga Iff To Chunky: indexed 320x256 ILBM (4-8 planes),
uncompressed or ByteRun1, into an AMOS DATA/WORK bank
The C2P functions operate on a 320x256 indexed AGA screen
with double buffering (16/32/64/128/256 colours). They use
an 8-bit chunky AMOS bank of at least 81,920 bytes and an
intermediate Chip RAM bitmap. C2P conversion does not change
the palette or swap the screen automatically.
IMPORTANT - external C2P dependency:
The five Aga C2P functions require c2p.library v1.9,
installed separately in LIBS: (usually SYS:Libs/).
It is NOT part of AMOSPro_AGA.Lib. Obtain it from Aminet:
https://aminet.net/package/dev/misc/c2plib
The Aga Iff To Chunky decoder itself does not require it.
Validation and publication status:
R82 has passed native 68020 CPU, ABI and AP20 Gate A tests.
At preparation time, R82's WinUAE interpreted (Gate B)
and AMOS Compiler (Gate C) tests were still pending.
The previously promoted R81 passed Gates A/B/C on its
documented WinUAE scenario. This R82 file is a draft for
the NEXT Aminet upload, not proof that R82 is promoted.
Physical AGA Amiga testing (Gate D) has not been performed.
No hardware speedup or exhaustive API coverage is claimed.
Installation:
1. Back up your AMOS configuration and existing libraries.
2. Copy AMOSPro_AGA.Lib into your AMOS APSystem directory.
3. In AMOS Professional, open Config / Set Interpreter /
Set Loaded Extensions, and register it in a free slot.
Existing users must preserve their current extension
slot. The project historically used slot 14.
4. Save the interpreter configuration and restart AMOS.
5. For C2P, also install c2p.library v1.9 in LIBS:.
6. Import .asc examples via Project / Merge ASCII; these
are text sources, not tokenized .AMOS programs.
Some demos require IFF images, AGAPIC/AGAPAL banks or fonts.
Check INSTALL.md and the examples documentation for details.
AGAPIC v2 and the four new bank-palette commands belong to
the R82 candidate; use the promoted R81 if you require the
previously qualified release while R82 validation continues.
Source code and technical documentation are under the MIT
License. Artwork, logos, scans, IFF images and fonts may have
separate licensing terms; see ASSETS_LICENSE.md.
Source, updates and documentation:
https://github.com/anthea176/AMOSPro-AGA-Extension
Designed and developed by HWARF, with assistance from
ChatGPT (OpenAI) for programming, testing and documentation.
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aminet net>