Apple-2-SW/apple2a
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add initial keyboard_get()

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This commit is contained in:
Brad Grantham 2018-07-31 12:02:26 -07:00
parent 854843d40c
commit 128509fdcd
1 changed files with 13 additions and 6 deletions
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19
main.c
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@ -1,9 +1,8 @@
#include "platform.h"
char *title = "Apple IIa"; char *title = "Apple IIa";
unsigned char title_length = 9; unsigned char title_length = 9;
volatile unsigned char *text_page1_base = (unsigned char *)0x400;
volatile unsigned char *text_page2_base = (unsigned char *)0x800;
/** /**
* Delay for a count of "t". 8000 is about one second. * Delay for a count of "t". 8000 is about one second.
*/ */
@ -17,7 +16,7 @@ static void delay(int t) {
* Clear the screen with non-reversed spaces. * Clear the screen with non-reversed spaces.
*/ */
static void home() { static void home() {
volatile unsigned char *p = text_page1_base; volatile unsigned char *p = TEXT_PAGE1_BASE;
unsigned char ch = ' ' | 0x80; unsigned char ch = ' ' | 0x80;
int i; int i;
@ -31,7 +30,7 @@ int main(void)
{ {
int offset = (40 - title_length) / 2; int offset = (40 - title_length) / 2;
volatile unsigned char *loc = text_page1_base + offset; volatile unsigned char *loc = TEXT_PAGE1_BASE + offset;
int i; int i;
@ -43,15 +42,23 @@ int main(void)
} }
// Prompt. // Prompt.
loc = text_page1_base + (40 + 40 + 48)*2; loc = TEXT_PAGE1_BASE + (40 + 40 + 48)*2;
*loc++ = ']' | 0x80; *loc++ = ']' | 0x80;
// Cursor. // Cursor.
i = 1;
while(1) { while(1) {
*loc = 127 | 0x80; *loc = 127 | 0x80;
delay(2500); delay(2500);
*loc = ' ' | 0x80; *loc = ' ' | 0x80;
delay(2500); delay(2500);
while(keyboard_test()) {
unsigned char key;
key = keyboard_get();
loc[i++] = key | 0x80;
}
} }
return 0; return 0;