Show HID device selection in RIA debug UI

Author: smokku

src/chips/ria816.c

@@ -169,6 +169,10 @@ void ria816_hid_write(ria816_t* c, uint8_t reg, uint8_t data) {
         HID_dev = data;
 }
 
+uint8_t ria816_hid_dev(const ria816_t* c) {
+    return HID_dev;
+}
+
 uint64_t ria816_tick(ria816_t* c, uint64_t pins) {
     pins = _ria816_tick(c, pins);
     if (pins & RIA816_CS) {
@@ -193,6 +197,7 @@ uint64_t ria816_tick(ria816_t* c, uint64_t pins) {
             uint8_t data = RIA816_GET_DATA(pins);
             ria816_hid_write(c, addr, data);
         }
+        pins |= RIA816_CS;  // signal data merge to main loop
     }
     if (pins & RIA816_TIMERS_CS) {
         // CIA timers emulation
@@ -206,6 +211,7 @@ uint64_t ria816_tick(ria816_t* c, uint64_t pins) {
             uint8_t data = M6526_GET_DATA(pins);
             _m6526_write(&c->cia, addr, data);
         }
+        pins |= RIA816_CS;  // signal data merge to main loop
     }
 
     pins = _ria816_update_irq(c, pins);

src/chips/ria816.h

@@ -216,6 +216,7 @@ uint8_t ria816_reg_read(ria816_t* c, uint8_t addr);
 void ria816_reg_write(ria816_t* c, uint8_t addr, uint8_t data);
 uint8_t ria816_hid_read(ria816_t* c, uint8_t reg);
 void ria816_hid_write(ria816_t* c, uint8_t reg, uint8_t data);
+uint8_t ria816_hid_dev(const ria816_t* c);
 
 #ifdef __cplusplus
 }  // extern "C"

src/ui/ui_ria816.cc

@@ -1,4 +1,5 @@
 #include "./ui_ria816.h"
+#include "sys/ria.h"
 
 #include "ui/ui_util.h"
 
@@ -147,6 +148,15 @@ static void _ui_ria816_draw_state(ui_ria816_t* win) {
     ui_util_b8("UART : ", ria_status);
     ImGui::SameLine();
     ImGui::Text("%s%s", ria_status & 0b10000000 ? "CTS " : "", ria_status & 0b01000000 ? "DRD " : "");
+    uint8_t hid_dev = ria816_hid_dev(ria);
+    ImGui::Text("HID  :       %02X", hid_dev);
+    ImGui::SameLine();
+    switch (hid_dev & 0x0F) {
+        case RIA_HID_DEV_KEYBOARD: ImGui::Text("KBD%d", hid_dev >> 5); break;
+        case RIA_HID_DEV_MOUSE: ImGui::Text("MOU%d", hid_dev >> 4); break;
+        case RIA_HID_DEV_GAMEPAD: ImGui::Text("PAD%d", hid_dev >> 4); break;
+        default: ImGui::Text("???"); break;
+    }
     ImGui::SeparatorText("Interrupts");
     ui_util_b8("RIA   : ", ria->irq_enable);
     ui_util_b8("Status: ", ria->int_status);