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Atari 5200 OS header refinements

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baktrasf 2020-12-23 23:35:09 +01:00 committed by Oliver Schmidt
parent 1c72da4904
commit 2e9bada1f2
2 changed files with 19 additions and 9 deletions
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10
doc/atari5200.sgml
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@ -73,6 +73,16 @@ Special locations:
Programs containing Atari 5200 specific code may use the <tt/atari5200.h/ header file.
This also includes access to operating system locations (e.g. hardware shadow registers) by a structure called
"<tt/OS/".
The names are the usual ones you can find in system reference manuals. Example:
<tscreen><verb>
...
OS.sdmctl = 0x00; // screen off
OS.color4 = 14; // white frame
... tics = OS.rtclok[1] // get ticks
</verb></tscreen>
<sect1>Atari 5200 specific functions<p>

16
include/_atari5200os.h
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@ -49,12 +49,12 @@ struct __os {
unsigned char pcolr1; // = $09 PM color 1
unsigned char pcolr2; // = $0A PM color 2
unsigned char pcolr3; // = $0B PM color 3
unsigned char color0; // = $0C PF Color 0
unsigned char color1; // = $0D PF Color 1
unsigned char color2; // = $0E PF Color 2
unsigned char color3; // = $0F PF Color 3
unsigned char color4; // = $10 PF Color 4
unsigned char __filler[0xEF]; // = $11-$FF Filler
unsigned char color0; // = $0C PF color 0
unsigned char color1; // = $0D PF color 1
unsigned char color2; // = $0E PF color 2
unsigned char color3; // = $0F PF color 3
unsigned char color4; // = $10 PF color 4
unsigned char _free_1[0xEF]; // = $11-$FF User space
/*Stack*/
unsigned char stack[0x100]; // = $100-$1FF Stack
@ -65,9 +65,9 @@ struct __os {
void (*vvblkd)(void); // = $204 Deferred VBI vector
void (*vdslst)(void); // = $206 DLI vector
void (*vkeybd)(void); // = $208 Keyboard IRQ vector
void (*vkeypd)(void); // = $20A Keypad continue vector
void (*vkeypd)(void); // = $20A Keyboard continuation vector
void (*vbrkky)(void); // = $20C Break key interrupt vector
void (*vbreak)(void); // = $20E Break instruction interrupt vector
void (*vbreak)(void); // = $20E BRK instruction interrupt vector
void (*vserin)(void); // = $210 Serial input ready vector
void (*vseror)(void); // = $212 Serial output data needed vector
void (*vseroc)(void); // = $214 Serial output completed vector