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CU Amiga Magazine's Super CD-ROM 21 (1998)(EMAP Images)(GB)[!][issue 1998-04].iso
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SD64evd
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SD64evd.readme
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1996-07-06
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Short: PiccoloSD64 ext. driver for ShapeShifter
Author: fdoro@gpnet.it (Francesco Doro)
Uploader: fdoro@gpnet.it (Francesco Doro)
Type: misc/emu
PiccoloSD64 external 24 bit video driver for ShapeShifter
1996 by Francesco Doro (fdoro@gpnet.it)
Public Domain
SD64evd is an external video driver for the Macintosh emulator
ShapeShifter. It supports only the 24/32 bit color mode of the graphics
board PiccoloSD64.
This driver uses the internal blitter of the SD64 for the refresh; that
blitter is really powerful.
A blitter done refresh gives the following advantages:
- Speed: a 640x480 24 bit display takes 0.05 sec to be refreshed.
- Doesn't need MMU.
- It is CPU indipendent: the CPU has only to wait until the blitter
finishes so the speed is the same on a 14 Mhz 68EC020 as on a 50 Mhz
68060 (but only the refresh speed is the same...).
- It is bus' bandwidth indipendent: the refresh speed is the same for a
Zorro2 installed board as for a Zorro3 (again, only the refresh speed).
- Doesn't need Amiga's memory: both virtual and real display resides on
the board's video memory.
...But gives also this disavantage:
- Since both virtual and real display must reside in the video memory, a
2 Meg SD64 allows max a 640x400 24 bit display.
*** Requirements:
Besides a working Amiga and PiccoloSD64, you need a registered and
correctly installed CyberGraphX and a recent version of ShapeShifter,
whether registered or not.
*** Features:
At the moment SD64evd supports these screen modes:
512 x 384 x 24 bit
576 x 432 x 24 bit
640 x 400 x 24 bit
640 x 480 x 24 bit (only for 4 Meg SD64)
768 x 576 x 24 bit (only for 4 Meg SD64)
800 x 600 x 24 bit (only for 4 Meg SD64)
832 x 624 x 24 bit (only for 4 Meg SD64)
The assembly source is included.
============================= Archive contents =============================
Original Packed Ratio Date Time Name
-------- ------- ----- --------- -------- -------------
2456 1410 42.5% 03-Jun-96 19:18:38 SD64evd
12809 3733 70.8% 03-Jun-96 20:52:42 SD64evd.asm
7584 3280 56.7% 03-Jun-96 21:20:58 SD64evd.doc
1540 936 39.2% 01-Jun-96 18:33:44 SD64evd_TEST
8219 2465 70.0% 01-Jun-96 23:20:08 SD64evd_TEST.asm
725 356 50.8% 31-May-96 13:26:46 SD64evd_TEST.doc
-------- ------- ----- --------- --------
33333 12180 63.4% 05-Jun-96 05:15:48 6 files