[P8085] Read control signals as bus

Assign control signals, S0, S1, #RD, #WR and #INTA to P9 and read those signals at once.
tgtakaoka · Apr 15, 2024 · 02a1bb7 · 02a1bb7
1 parent 4014ac5
commit 02a1bb7
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Showing 30 changed files with 7,783 additions and 2,166 deletions.
diff --git a/debugger/i8085/devs_i8085.cpp b/debugger/i8085/devs_i8085.cpp
@@ -37,6 +37,10 @@ void DevsI8085::write(uint32_t addr, uint16_t data) const {
     USART.write(addr, data);
 }
 
+uint16_t DevsI8085::vector() const {
+    return USART.vector();
+}
+
 Device &DevsI8085::parseDevice(const char *name) const {
     if (strcasecmp(name, USART.name()) == 0)
         return USART;

diff --git a/debugger/i8085/devs_i8085.h b/debugger/i8085/devs_i8085.h
@@ -15,6 +15,7 @@ struct DevsI8085 final : Devs {
     bool isSelected(uint32_t addr) const override;
     uint16_t read(uint32_t addr) const override;
     void write(uint32_t addr, uint16_t data) const override;
+    uint16_t vector() const override;
 
     Device &parseDevice(const char *name) const override;
     void enableDevice(Device &dev) override;

diff --git a/debugger/i8085/inst_i8085.h b/debugger/i8085/inst_i8085.h
@@ -8,10 +8,16 @@ namespace i8085 {
 
 struct InstI8085 {
     static constexpr uint8_t NOP = 0x00;
-    static constexpr uint8_t RST0 = 0xC7;
     static constexpr uint8_t HLT = 0x76;
-    static constexpr uint8_t EI = 0xFB;
+    static constexpr uint8_t RET = 0xC9;
     static constexpr uint8_t DI = 0xF3;
+    static constexpr uint8_t EI = 0xFB;
+
+    static constexpr uint16_t ORG_TRAP = 0x0024;
+    static uint8_t vec2Inst(uint8_t vec) { return RST0 | (vec & 0x38); }
+
+private:
+    static constexpr uint8_t RST0 = 0xC7;
 };
 
 }  // namespace i8085