Name: Posadas Chronicles by Nibbleforge
Compo: Intro 64k compo, A500 ECS
For Posadas Amiga Party 2025
Code, music, graphics by mgyv.
Tested in:
-A500 512 chip + 512 slowfast
-A500 68010, 1024 chip + 1.5Mb slow
-A500 68030, tf534
-FS-UAE 3.0.2 with AGA configuration in linux.
Developed mainly in A500s.
Used tools in Amiga:
-AsmTwo
-Deluxe paint IV
-Octamed 5
-Octamed Soundstudio
-P61 converter
-Kefrens converter iff->raw
-Cranker
Used tools in linux:
-Lazarus (freepascal) used for
-Music converter (octaconvert) to custom format (GXM)
-Make preview of lfsrs
-Make preview of spermatozoo movement
-Ham convert used for:
-Convert/scale posadas logo
-Convert/scale head
-Convert/scale predictor
Song was composed using 2 amigas with octamed. Drums + bass in one octamed (only 1 octave allowed) and
3 real channels with everything else in the other amiga.
If you like, can be tried with a serial cable (3 wire is ok) connecting the two amigas. Load both modules med. One octamed must be
configured:
-Midi Active
-Send Sync
-Send Active sensing
The other amiga configuration:
-Midi Active
-Input active
-Ext sync
Drum samples from Garage band, resampled to A2 (about 13k samples/s)
Single note samples were drawed in octamed (leads/bass with 24/48/96 bytes).
Dual note samples were generated from the single note samples programatically, trying to get the smallest samples
with proportions (kind of pytagorean affination with string lengths) with enough affination.
For example, with 48 bytes samples:
F.Exmple:We need a fifth. Its proportion is 3/2. The higher note will be repeated 3 times (48*3 bytes).
The lower note has to be repeated 2 times along 48*3 bytes. This was done interpolating the original 48 bytes sample. They must complete the 2 cycles exactly every 48*3 bytes.
To get accurate affination, some intervals are trickier, and should use much higher proportions and use more memory.
Note:Octamed 5 samples must have at least 4 bytes at 0 level before the loop. If not done, once saved as protracker module, will put 4 0s at the beginning of the sample.
mgyv.