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Remove unnecessary functions and tests

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This commit is contained in:
Peter Evans 2018-01-17 14:02:37 -06:00
parent bf529d6c9b
commit 6670df930b
2 changed files with 0 additions and 75 deletions
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48
src/apple2.c
View File

@ -260,20 +260,6 @@ apple2_reset(apple2 *mach)
apple2_set_memory_mode(mach, MEMORY_DEFAULT);
}
/*
* This function will clear the 8th bit, which is the "strobe" bit, from
* the position in memory where the value of the last key that was
* pressed is held.
*/
void
apple2_clear_strobe(apple2 *mach)
{
vm_8bit ch;
ch = vm_segment_get(mach->main, LAST_KEY);
vm_segment_set(mach->main, LAST_KEY, ch & 0x7F);
}
/*
* Free the memory reserved for an apple2 struct.
*/
@ -318,40 +304,6 @@ apple2_free(apple2 *mach)
free(mach);
}
/*
* Emulate the notion of a pressed key in the apple2 with a given
* character.
*/
void
apple2_press_key(apple2 *mach, vm_8bit ch)
{
// The apple2 can only handle ASCII values of 0 through 127.
// However, the eigth bit is called the "strobe" bit, and is treated
// specially. In particular, the strobe bit is 1 if a key was
// pressed down, and remains 1 until you reset it by reading from
// the clear-strobe location.
ch = ch | 0x80;
// This is the location in memory where a program will expect to
// find the value of the last key that was pressed.
vm_segment_set(mach->main, LAST_KEY, ch);
// This area is a combination of flags; the eighth bit here is the
// "any-key-down" flag, which is a bit of a mouthful. It's 1 if a
// key is pressed, and 0 if not. The effect of reading this bit will
// also _clear_ the strobe bit in the $C000 address (above).
vm_segment_set(mach->main, ANY_KEY_DOWN, 0x80);
}
/*
* This function will clear the value of the any-key-down switch/flag.
*/
void
apple2_release_key(apple2 *mach)
{
vm_segment_set(mach->main, ANY_KEY_DOWN, 0);
}
/*
* The run loop is the function that essentially waits for user input
* and continues to present the apple2 abstraction for you to use. At

27
tests/apple2.c
View File

@ -55,33 +55,6 @@ Test(apple2, boot)
cr_assert_neq(apple2_boot(mach), OK);
}
Test(apple2, press_key)
{
apple2_press_key(mach, 123);
cr_assert_eq(vm_segment_get(mach->main, 0xC000), 123 | 0x80);
cr_assert_eq(vm_segment_get(mach->main, 0xC010), 0x80);
}
Test(apple2, clear_strobe)
{
apple2_press_key(mach, 123);
cr_assert_eq(vm_segment_get(mach->main, 0xC000), 123 | 0x80);
apple2_clear_strobe(mach);
cr_assert_eq(vm_segment_get(mach->main, 0xC000), 123);
}
/*
* This also tests the press_key function (as does the clear_strobe
* test, in its own way).
*/
Test(apple2, release_key)
{
apple2_press_key(mach, 123);
cr_assert_eq(vm_segment_get(mach->main, 0xC010), 0x80);
apple2_release_key(mach);
cr_assert_eq(vm_segment_get(mach->main, 0xC010), 0);
}
Test(apple2, set_color)
{
apple2_set_color(mach, COLOR_AMBER);