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Add missing docblock comments, remove some dead code

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This commit is contained in:
Peter Evans 2018-03-31 21:10:08 -05:00
parent 418950750f
commit 2d0952133a
1 changed files with 26 additions and 32 deletions
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58
src/apple2.hires.c
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@ -22,24 +22,18 @@
#include "apple2.text.h"
enum hires_color {
HIRES_PURPLE,
HIRES_GREEN,
HIRES_BLUE,
HIRES_PURPLE,
HIRES_ORANGE,
HIRES_BLUE,
HIRES_BLACK,
HIRES_WHITE,
};
enum hires_state {
HIRES_DARK,
HIRES_LIGHT,
HIRES_ALTCOLOR,
};
typedef struct {
int color;
} hires_pixel;
/*
* This table maps a row number to a base address in the hires graphics
* buffer. From there, (base + i) maps to column i in that row.
*/
static int addresses[] = {
// 0 1 2 3 4 5 6 7
0x2000, 0x2400, 0x2800, 0x2C00, 0x3000, 0x3400, 0x3800, 0x3C00, // 0-7
@ -68,6 +62,13 @@ static int addresses[] = {
0x23D0, 0x27D0, 0x2BD0, 0x2FD0, 0x33D0, 0x37D0, 0x3BD0, 0x3FD0, // 184-191
};
#if 0
/*
* This table maps an address (across the entire hires graphics buffer
* range!) to a row. We're not using it at the moment, but I'm keeping
* it around in case we need it down the road. (Similar situation to the
* cols table.)
*/
static int rows[] = {
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // $2000
@ -583,7 +584,15 @@ static int rows[] = {
191, 191, 191, 191, 191, 191, 191, 191, 191, 191, 191, 191, 191, 191, 191, 191, // $3FE0
191, 191, 191, 191, 191, 191, 191, 191, -1, -1, -1, -1, -1, -1, -1, -1, // $3FF0
};
#endif
#if 0
/*
* This table maps an address to a column, but it's a bit incomplete. We
* don't use it right now--I built it for an earlier version of my
* code--but I'm keeping it on the chance that I may want this somewhere
* down the road.
*/
static int cols[] = {
// 0 1 2 3 4 5 6 7 8 9 A B C D E F
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, // $00
@ -595,6 +604,7 @@ static int cols[] = {
16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, // $60
32, 33, 34, 35, 36, 37, 38, 39, -1, -1, -1, -1, -1, -1, -1, -1, // $70
};
#endif
/*
* Define the colors that are indicated by a bit-pair when bit 7 of a
@ -609,26 +619,6 @@ static vm_color colors[] = {
{ 0xff, 0xff, 0xff, 0x00 }, // white
};
#define COLOR(b, h) \
(h) ? colors[((b) & 0x3) | 0x4] : colors[(b) & 0x3]
int
apple2_hires_row(size_t addr)
{
return rows[addr - 0x2000];
}
/*
* Return the column offset of pixels (more than one pixel is in a
* column-cell) for high-resolution graphics. As it turns out, this is
* exactly the same as the text column number.
*/
int
apple2_hires_col(size_t addr)
{
return cols[addr % 0x80];
}
/*
* Draw a single row of hires graphics.
*/
@ -703,6 +693,10 @@ apple2_hires_draw(apple2 *mach, int row)
}
}
/*
* Print a representation of the machine's hires graphics buffer to the
* given file stream.
*/
void
apple2_hires_dump(apple2 *mach, FILE *stream)
{