Printer mostly working over IEC

Seems to be a problem with iecll_unlisten hanging.

docs/f256k2_registers.txt

@@ -8,3 +8,11 @@ $F0_1D60 - $F0_1D7F - Wiznet Copper SPI Interface
 $F0_1D80 - $F0_1D9F - Wiznet WIFI UART interface (115K or 2M)
 $F0_1DA0 - $F0_1DBF - MIDI UART (Fixed @ 31,250Baud)
 $F0_1DC0 - $F0_1DDF - Master SPI Interface to Supervisor (RP2040)*
+
+/* SPI Controler 0 Registers - External Access (Front of Unit)*/
+#define SD0_CTRL      (*(volatile __far uint8_t *)0xF01D00)
+#define SD0_DATA            (*(volatile __far uint8_t *)0xF01D01)
+/* SPI Controler 1 Registers - Internal Access (underneath of Unit - uSDCard) */
+// Specific to the F256xE - Internal SDCard (Permanent Disk)
+#define SD1_CTRL      (*(volatile __far uint8_t *)0xF01D20)  <----
+#define SD1_DATA            (*(volatile __far uint8_t *)0xF01D21) <----

src/C256/flash-f256.scm

@@ -0,0 +1,35 @@
+(define memories
+  '((memory flash (address (#xf80000 . #xffffff))
+  		(fill 0)
+	    (section
+			(LoCodeStorage #xffe000)
+		    (VectorStorage #xffffe0)))
+    (memory DirectPage (address (#x00c000 . #x00c0ff))
+        (section (registers ztiny)))
+    (memory LoRAM (address (#x00c100 . #x00efff))
+        (section stack data zdata data heap))
+    (memory NearRAM1 (address (#x050000 . #x057fff))
+        (section znear near))
+    (memory NearRAM2 (address (#x058000 . #x05ffff))
+        (section cnear))
+    (memory FarRAM1 (address (#x060000 . #x06ffff))
+        (section far huge))
+    (memory FarRAM2 (address (#x070000 . #x07ffff))
+        (section zfar zhuge))
+    (memory LoCode (address (#x00e000 . #x00ffdf))
+		(scatter-to LoCodeStorage)
+        (section code cdata (jumptable #x00e000)))
+    (memory Vector (address (#x00ffe0 . #x00ffff))
+		(scatter-to VectorStorage)
+        (section (reset #xfffc)))
+    (memory HiCode1 (address (#xf80000 . #xf8ffff))
+	    (section cfar switch data_init_table ifar farcode))
+    (memory HiCode2 (address (#xf90000 . #xf9ffff))
+	    (section cfar switch data_init_table ifar farcode))
+    (memory HiCode3 (address (#xfa0000 . #xfaffff))
+	    (section cfar switch data_init_table ifar farcode))
+    (block stack (size #x1000))
+    (block heap (size #x1000))
+    (base-address _DirectPageStart DirectPage 0)
+    (base-address _NearBaseAddress NearRAM1   0)
+))

src/C256/iecll.s

@@ -62,6 +62,13 @@ loop$           lda IEC_INPUT_PORT
                 pla
                 rts
                 .endm
+
+emit:			.macro char
+				pha
+				lda #(\char)
+				sta long: 0xf04000
+				pla
+				.endm
                
 ;;
 ;; Private functions

src/dev/iec.c

@@ -26,6 +26,20 @@ void iec_close(uint8_t device, uint8_t channel)  {
 	iecll_unlisten();
 }
 
+void iec_print(uint8_t device, char * message) {
+	// Open the device, channel 1
+	uint8_t channel = 1;
+	iecll_listen(device);
+	iecll_listen_sa(0x60 | channel);
+
+	for (char *x = message; *x; x++) {
+		iecll_out(*x);
+	}
+
+	iecll_unlisten();
+	iec_close(4, channel);
+}
+
 /**
  * @brief Retrieve the raw status string from an IEC device
  * 

src/dev/iec.h

@@ -14,6 +14,8 @@
 
 #include <stdint.h>
 
+extern void iec_print(uint8_t device, char * message);
+
 /**
  * @brief Retrieve the raw status string from an IEC device
  * 

src/toolbox.c

@@ -493,10 +493,13 @@ int main(int argc, char * argv[]) {
 		printf("Error initializing IEC.\n");
 	}
 
-	printf("Attempting to get status for IEC drive #8: ");
+	// printf("Attempting to get status for IEC drive #8: ");
-	short n = iec_status(8, message, 256);
+	// short n = iec_status(8, message, 256);
+	// printf("\"%s\"\n", message);
 
-	printf("\"%s\"\n", message);
+	printf("Attempting to write to the printer.\n");
+	iec_print(4, "\e1THIS IS PRINTED FROM AN F256K OVER THE IEC PORT!\r");
+	printf("Done.\n");
 
 	// Attempt to start up the user code
     // log(LOG_INFO, "Looking for user startup code:");