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apple2gs: add some missing ADB commands. (#7753)

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ksherlock 2021-02-07 08:22:13 -05:00 committed by GitHub
parent 0637e99cc1
commit f102bc364c
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 81 additions and 19 deletions
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100
src/mame/drivers/apple2gs.cpp
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@ -629,6 +629,7 @@ private:
void adb_post_response(const u8 *bytes, size_t length);
void adb_post_response_1(u8 b);
void adb_post_response_2(u8 b1, u8 b2);
void adb_post_response_3(u8 b1, u8 b2, u8 b3);
void adb_do_command();
void adb_write_datareg(u8 data);
void adb_write_kmstatus(u8 data);
@ -965,6 +966,15 @@ void apple2gs_state::adb_post_response_2(u8 b1, u8 b2)
adb_post_response(b, 2);
}
void apple2gs_state::adb_post_response_3(u8 b1, u8 b2, u8 b3)
{
u8 b[3];
b[0] = b1;
b[1] = b2;
b[2] = b3;
adb_post_response(b, 3);
}
void apple2gs_state::adb_do_command()
{
int device;
@ -980,6 +990,12 @@ void apple2gs_state::adb_do_command()
case 0x00: /* ??? */
break;
case 0x01: /* abort */
break;
case 0x02: /* reset keyboard uC */
break;
case 0x03: /* flush keyboard buffer */
break;
@ -1011,12 +1027,20 @@ void apple2gs_state::adb_do_command()
adb_post_response_1(adb_read_memory(address));
break;
case 0x0a: /* ??? */
case 0x0b: /* ??? */
case 0x0a: /* read modes */
adb_post_response_1(m_adb_mode);
break;
case 0x0b: /* read config */
adb_post_response_3(0, 0, 0); /* ignored for now */
break;
case 0x0c: /* read adb error */
adb_post_response_1(0);
break;
case 0x0d: /* get version */
adb_post_response_1(0x06);
adb_post_response_1(m_is_rom3 ? 0x06 : 0x05); /* rom0 0x04 */
break;
case 0x0e: /* read available charsets */
@ -1027,10 +1051,25 @@ void apple2gs_state::adb_do_command()
adb_post_response_2(0x01, 0x00);
break;
case 0x12: /* mystery command 0x12 */
case 0x13: /* mystery command 0x13 */
case 0x10: /* reset system */
break;
case 0x11: /* send adb keycode */
break;
case 0x12: /* mystery command 0x12 - mouse key parameters */
case 0x13: /* mystery command 0x13 - disk key parameters */
break;
case 0x40: /* reset adb */
break;
case 0x49: case 0x4a: case 0x4b: case 0x4c:
case 0x4d: case 0x4e: case 0x4f:
/* transmit adb bytes. first byte is adb device command */
break;
case 0x84: // ACS demo disk #2 has a bug and writes this accidentally to $C026
break;
@ -1101,6 +1140,7 @@ void apple2gs_state::adb_write_datareg(u8 data)
{
case 0x00: /* ??? */
case 0x01: /* abort */
case 0x02: /* reset keyboard uC */
/* do nothing for now */
break;
@ -1129,30 +1169,52 @@ void apple2gs_state::adb_write_datareg(u8 data)
m_adb_command_length = 2;
break;
case 0x0a: /* ??? */
case 0x0b: /* ??? */
m_adb_command_length = 0;
break;
case 0x0a: /* read modes */
case 0x0b: /* read config */
case 0x0c: /* read adb error */
case 0x0d: /* get version */
m_adb_command_length = 0;
break;
case 0x0e: /* read available charsets */
m_adb_command_length = 0;
m_adb_state = ADBSTATE_INCOMMAND; /* HACK */
break;
case 0x0f: /* read available layouts */
m_adb_command_length = 0;
m_adb_state = ADBSTATE_INCOMMAND; /* HACK */
break;
case 0x12: /* mystery command 0x12 */
case 0x13: /* mystery command 0x13 */
case 0x10: /* reset system */
/* do nothing for now */
break;
case 0x11: /* send adb keycode */
m_adb_command_length = 1;
break;
case 0x12: /* mystery command 0x12 - mouse key parameters? */
case 0x13: /* mystery command 0x13 - disk eject parameters? */
m_adb_command_length = 2;
break;
case 0x40: /* reset ADB */
break;
/* 0x49 - 0x4f - transmit ADB bytes where length = command & 0xf - 6*/
case 0x49: case 0x4a: case 0x4b: case 0x4c:
case 0x4d: case 0x4e: case 0x4f:
m_adb_command_length = (m_adb_command & 0x0f) - 6;
break;
case 0x50: /* enable SRQ device 0 */
case 0x51: /* enable SRQ device 1 */
case 0x52: /* enable SRQ device 2 */
case 0x53: /* enable SRQ device 3 */
/* ignore for now */
break;
case 0x60: /* flush adb buffer device 0 */
case 0x61: /* flush adb buffer device 1 */
case 0x62: /* flush adb buffer device 2 */
case 0x63: /* flush adb buffer device 3 */
/* ignore for now */
break;
case 0x70: /* disable SRQ device 0 */
case 0x71: /* disable SRQ device 1 */
case 0x72: /* disable SRQ device 2 */