DEGAS file format
DEGAS *.PI1 (low resolution) *.PI2 (medium resolution) *.PI3 (high resolution) (PI4, PI5, PI6) 1 word resolution (0 = low res, 1 = medium res, 2 = high res) Other bits may be used in the future; use a simple bit test rather than checking for specific word values. 16 words palette 16000 words picture data (screen memory) ----------- 32034 bytes total Conny Pettersson of Unit Seventeen proposed to extend the Degas format with PI4 and PI5 for TT resolutions in a text file accompaning the viewst program: For saving the pictures, I have extended the standard Degas-format PI0 to the TT-resolutions. Following is a description of the format I use: ST-Low TT-Low TT-Medium Extension PI0 PI4 PI5 Resolution 1 word: $0000 1 word: $0007 1 word: $0004 Colormap 16 word 256 word 16 word Bitmap 32000 bytes 153600 bytes 153600 bytes Total length 32034 bytes 154114 bytes 153634 bytes This format is not in wide spread use as datacompression on those huge screens really makes sence. Nevertheless various file-extension decriptions on the internet assign the extensions PI4, PI5 and PI6 to TT Degas resolutions.
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