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apple2 has 64k now

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This commit is contained in:
Steven Hugg 2018-08-26 00:17:02 -04:00
parent 27cae568fc
commit 113fdd4099
2 changed files with 15 additions and 6 deletions
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17
presets/apple2/cosmic.c
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@ -1,3 +1,9 @@

/*
* An Apple ][ port of the Cosmic Impalas game
* described in the book
* "Making 8-bit Arcade Games in C"
*/
#include <string.h> #include <string.h>
#include <conio.h> #include <conio.h>
@ -14,6 +20,7 @@ typedef unsigned short word;
#define PEEK(addr) (*(unsigned char*) (addr)) #define PEEK(addr) (*(unsigned char*) (addr))
#define PEEKW(addr) (*(unsigned*) (addr)) #define PEEKW(addr) (*(unsigned*) (addr))
#define STROBE(addr) __asm__ ("sta %w", addr) #define STROBE(addr) __asm__ ("sta %w", addr)
// speaker click // speaker click
#define CLICK STROBE(0xc030) #define CLICK STROBE(0xc030)
@ -78,8 +85,6 @@ const byte MOD7[256] = {
// bitmask table // bitmask table
const byte BIT7[7] = { 1, 2, 4, 8, 16, 32, 64 }; const byte BIT7[7] = { 1, 2, 4, 8, 16, 32, 64 };
#pragma static-locals(on)
/// SOUND FUNCTIONS /// SOUND FUNCTIONS
void tone(byte period, byte dur, sbyte mod) { void tone(byte period, byte dur, sbyte mod) {
@ -93,6 +98,7 @@ void tone(byte period, byte dur, sbyte mod) {
/// GRAPHICS FUNCTIONS /// GRAPHICS FUNCTIONS
// clear screen and set graphics mode
void clrscr() { void clrscr() {
STROBE(0xc052); // turn off mixed-mode STROBE(0xc052); // turn off mixed-mode
STROBE(0xc054); // page 1 STROBE(0xc054); // page 1
@ -101,6 +107,7 @@ void clrscr() {
memset((byte*)0x2000, 0, 0x2000); // clear page 1 memset((byte*)0x2000, 0, 0x2000); // clear page 1
} }
// draw (xor) vertical line
void xor_vline(byte x, byte y1, byte y2) { void xor_vline(byte x, byte y1, byte y2) {
byte xb = DIV7[x]; // divide x by 7 byte xb = DIV7[x]; // divide x by 7
byte mask = BIT7[MOD7[x]]; // lookup bitmask for remainder byte mask = BIT7[MOD7[x]]; // lookup bitmask for remainder
@ -111,6 +118,7 @@ void xor_vline(byte x, byte y1, byte y2) {
} }
} }
// draw (xor) a pixel
void xor_pixel(byte x, byte y) { void xor_pixel(byte x, byte y) {
xor_vline(x, y, y); // draw line with 1-pixel height xor_vline(x, y, y); // draw line with 1-pixel height
} }
@ -119,6 +127,7 @@ typedef enum {
OP_DRAW, OP_XOR, OP_ERASE OP_DRAW, OP_XOR, OP_ERASE
} GraphicsOperation; } GraphicsOperation;
// render a sprite with the given graphics operation
byte render_sprite(const byte* src, byte x, byte y, byte op) { byte render_sprite(const byte* src, byte x, byte y, byte op) {
byte i,j; byte i,j;
byte w = *src++; // get width from 1st byte of sprite byte w = *src++; // get width from 1st byte of sprite
@ -481,9 +490,9 @@ void move_bomb() {
byte leftover = xor_sprite(bomb_bitmap, bomb_x, bomb_y); // erase byte leftover = xor_sprite(bomb_bitmap, bomb_x, bomb_y); // erase
if (bomb_y > 192-12) { if (bomb_y > 192-12) {
bomb_y = 0; bomb_y = 0;
} else if (leftover) { } else if (leftover & 0x7f) { // don't count hi bit
erase_sprite(bomb_bitmap, bomb_x, bomb_y); // erase bunker erase_sprite(bomb_bitmap, bomb_x, bomb_y); // erase bunker
if (bomb_y > 192-22) { if (bomb_y > 192-23) {
// player was hit (probably) // player was hit (probably)
destroy_player(); destroy_player();
} }

4
src/platform/apple2.ts
View File

@ -121,7 +121,7 @@ const _Apple2Platform = function(mainElement) {
if (address == 0xc070) if (address == 0xc070)
return noise() | 0x80; return noise() | 0x80;
case 8: case 8:
return 0; // TODO doLanguageCardIO(address, value); return doLanguageCardIO(address);
case 9: case 10: case 11: case 12: case 13: case 14: case 15: case 9: case 10: case 11: case 12: case 13: case 14: case 15:
return noise(); // return slots[slot-8].doIO(address, value); return noise(); // return slots[slot-8].doIO(address, value);
} }
@ -281,7 +281,7 @@ const _Apple2Platform = function(mainElement) {
} }
} }
function doLanguageCardIO(address, value) function doLanguageCardIO(address:number)
{ {
switch (address & 0x0f) { switch (address & 0x0f) {
// Select aux RAM bank 2, write protected. // Select aux RAM bank 2, write protected.