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12 Commits

Author SHA1 Message Date
Zack Buhman
fb0b237e0c ttf-bitmap: allow arbitrary width/height glyphs 2024-02-02 08:49:35 +08:00
Zack Buhman
511bfd1d0c remove duplicate start functions 
This is now provided by default in saturn/common.mk.

Also updates moved header names, changed bit macro names, and changes
to the common.mk build process.
 2023-07-30 18:03:19 +00:00
Zack Buhman
778138971f midi: play c major scale 
TIMA occurs at half the speed predicted in the SCSP manual in
mednafen, but at the correct speed in Kronos. I don't know which is
correct.
 2023-06-27 10:15:14 +00:00
Zack Buhman
c26bdd2630 scsp: incomplete midi example 2023-06-26 01:47:37 +00:00
Zack Buhman
f7a178384c scsp: add fm example 2023-06-24 02:59:31 +00:00
Zack Buhman
5ee43d8a29 use new smpc ireg/oreg struct declaration 
Previously operator[] overloads were used for ireg/oreg indexes.
 2023-06-23 10:07:19 +00:00
Zack Buhman
3b82199d08 sound_cpu__interrupt: add slot visuals 
This shows the value of some of the most relevant SCSP slot fields.
 2023-05-19 23:08:19 +00:00
Zack Buhman
3358d95704 scsp: zeroize dsp 
The Saturn BIOS does not (un)initialize the DSP. Without zeroizing the DSP
program, the SCSP DSP appears to have a program that continuously writes to
0x30000 through 0x3ffff in sound RAM, which has the effect of destroying any
samples stored there.
 2023-05-19 14:52:15 -07:00
Zack Buhman
f21e1d5c78 m68k: add new "interrupt" example 
I don't completely understand how the scsp timers work; "8192" is a
magic number I came up with by experimentation.
 2023-05-17 10:33:40 +00:00
Zack Buhman
f2b53ee62a m68k: more reasonable stack pointer value 
The sound_cpu example works consistently on all emulators and real
hardware now.
 2023-05-16 22:55:26 +00:00
Zack Buhman
8246b94aee add m68k example 2023-05-16 18:37:00 +00:00
Zack Buhman
29e049ab69 scsp: add "slot" example 
This demonstrates the most basic possible SCSP usage.

Strangely this does not work in Kronos, only in mednafen and on real
hardware. I'd like to find a hack, if possible, that fixes Kronos
playback.
 2023-05-14 22:50:34 +00:00