Jumper reading for Analog GS

common/buffers.c

@@ -11,6 +11,8 @@ volatile uint32_t busactive = 0;
 volatile uint8_t __attribute__((section (".appledata."))) apple_memory[64*1024];
 volatile uint8_t __attribute__((section (".appledata."))) private_memory[64*1024];
 
+volatile uint8_t jumpers = 0;
+
 #ifdef FUNCTION_VGA
 volatile uint8_t *text_p1 = apple_memory + 0x0400;
 volatile uint8_t *text_p2 = apple_memory + 0x0800;

common/buffers.h

@@ -16,6 +16,8 @@ extern volatile uint8_t cfbuf[4096];
 #define config_cmdbuf ((uint8_t*)(apple_memory+0xC0F0+(cardslot<<8)))
 #define config_rpybuf ((uint8_t*)(apple_memory+0xC0F8+(cardslot<<8)))
 
+extern volatile uint8_t jumpers;
+
 #ifdef FUNCTION_VGA
 extern volatile uint8_t *text_p1;
 extern volatile uint8_t *text_p2;

common/config.c

@@ -808,6 +808,12 @@ void DELAYED_COPY_CODE(config_handler)() {
                     config_rpybuf[rs++] = HWREV;  // '1'
                     break;
 
+                case 'j':
+                    // Read jumpers
+                    retval = REPLY_OK;
+                    config_rpybuf[rs++] = jumpers;
+                    break;
+
                 case 'd':
                     // Identify Date Request
                     retval = REPLY_OK;

common/main.c

@@ -35,6 +35,9 @@ static void __noinline __time_critical_func(core1_loop)() {
             }
         }
 
+#ifdef ANALOG_GS
+        jumpers = (value >> 26) & 0x3f;
+#endif
         busactive = 1;
 
         if(CARD_SELECT) {