diff mbox series

[16/21] mac_via: implement ADB_STATE_IDLE state if shift register in input mode

Message ID 20230702154838.722809-17-mark.cave-ayland@ilande.co.uk
State New
Headers show
Series q800: add support for booting MacOS Classic - part 2 | expand

Commit Message

Mark Cave-Ayland July 2, 2023, 3:48 p.m. UTC 
NetBSD switches directly to IDLE state without switching the shift register to
input mode. Duplicate the existing ADB_STATE_IDLE logic in input mode from when
the shift register is in output mode which allows the ADB autopoll handler to
handle the response.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
---
 hw/misc/mac_via.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/hw/misc/mac_via.c b/hw/misc/mac_via.c
index 208216aed3..398e8d1967 100644
--- a/hw/misc/mac_via.c
+++ b/hw/misc/mac_via.c
@@ -702,6 +702,12 @@  static void adb_via_send(MOS6522Q800VIA1State *v1s, int state, uint8_t data)
         break;
 
     case ADB_STATE_IDLE:
+        ms->b |= VIA1B_vADBInt;
+        adb_autopoll_unblock(adb_bus);
+
+        trace_via1_adb_send("IDLE", data,
+                            (ms->b & VIA1B_vADBInt) ? "+" : "-");
+
         return;
     }