diff --git a/Makefile b/Makefile
index b888577..e3bf6d1 100644
--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,5 @@
+cflags = -O --cpu 6502 -t apple2
+
 all:    GWRAM.po GWRAM.dbg.po
 
 obj:
@@ -7,37 +9,40 @@ bin:
 	@mkdir bin
 
 obj/main.o: obj main.c
-	cc65 main.c -O --cpu 6502 -t apple2enh -o obj/main.s
+	cc65 main.c $(cflags) -o obj/main.s
 	ca65 obj/main.s -o obj/main.o
 
 obj/ram2e.o: obj ram2e.c
-	cc65 ram2e.c -O --cpu 6502 -t apple2enh -o obj/ram2e.s
+	cc65 ram2e.c $(cflags) -o obj/ram2e.s
 	ca65 obj/ram2e.s -o obj/ram2e.o
 
 obj/ram2e.dbg.o: obj ram2e.c
-	cc65 ram2e.c -O --cpu 6502 -t apple2enh -o obj/ram2e.dbg.s -DSKIP_RAM2E_DETECT
+	cc65 ram2e.c $(cflags) -o obj/ram2e.dbg.s -DSKIP_RAM2E_DETECT
 	ca65 obj/ram2e.dbg.s -o obj/ram2e.dbg.o
 
 obj/ram2gs_asm.o: obj ram2gs_asm.s
 	ca65 ram2gs_asm.s -o obj/ram2gs_asm.o
 
 obj/ram2gs.o: obj ram2gs.c
-	cc65 ram2gs.c -O --cpu 6502 -t apple2enh -o obj/ram2gs.s
+	cc65 ram2gs.c $(cflags) -o obj/ram2gs.s
 	ca65 obj/ram2gs.s -o obj/ram2gs.o
 
 obj/ram2gs.dbg.o: obj ram2gs.c
-	cc65 ram2gs.c -O --cpu 6502 -t apple2enh -o obj/ram2gs.dbg.s -DSKIP_RAM2GS_DETECT
+	cc65 ram2gs.c $(cflags) -o obj/ram2gs.dbg.s -DSKIP_RAM2GS_DETECT
 	ca65 obj/ram2gs.dbg.s -o obj/ram2gs.dbg.o
 
 obj/util.o: obj util.c
-	cc65 util.c -O --cpu 6502 -t apple2enh -o obj/util.s
+	cc65 util.c $(cflags) -o obj/util.s
 	ca65 obj/util.s -o obj/util.o
 
-bin/main.sys: bin obj/main.o obj/ram2e.o obj/ram2gs.o obj/ram2gs_asm.o obj/util.o
-	ld65 -o bin/main.sys obj/main.o obj/ram2gs.o obj/ram2e.o obj/ram2gs_asm.o obj/util.o -C apple2enh-system.cfg --lib apple2enh.lib -D __EXEHDR__=0
+obj/gwconio.o: obj gwconio.s
+	ca65 gwconio.s -o obj/gwconio.o
 
-bin/main.dbg.sys: bin obj/main.o obj/ram2e.dbg.o obj/ram2gs.dbg.o obj/ram2gs_asm.o obj/util.o
-	ld65 -o bin/main.dbg.sys obj/main.o obj/ram2gs.dbg.o obj/ram2e.dbg.o obj/ram2gs_asm.o obj/util.o -C apple2enh-system.cfg --lib apple2enh.lib -D __EXEHDR__=0
+bin/main.sys: bin obj/main.o obj/ram2e.o obj/ram2gs.o obj/ram2gs_asm.o obj/util.o obj/gwconio.o
+	ld65 -o bin/main.sys obj/main.o obj/ram2gs.o obj/ram2e.o obj/ram2gs_asm.o obj/util.o obj/gwconio.o -C apple2-system.cfg --lib apple2.lib -D __EXEHDR__=0
+
+bin/main.dbg.sys: bin obj/main.o obj/ram2e.dbg.o obj/ram2gs.dbg.o obj/ram2gs_asm.o obj/util.o obj/gwconio.o
+	ld65 -o bin/main.dbg.sys obj/main.o obj/ram2gs.dbg.o obj/ram2e.dbg.o obj/ram2gs_asm.o obj/util.o obj/gwconio.o -C apple2-system.cfg --lib apple2.lib -D __EXEHDR__=0
 
 GWRAM.po: bin/main.sys
 	cp prodos140.po bin/GWRAM.po
diff --git a/bin/GWRAM.dbg.po b/bin/GWRAM.dbg.po
index 8b3441f..45f04a6 100644
Binary files a/bin/GWRAM.dbg.po and b/bin/GWRAM.dbg.po differ
diff --git a/bin/GWRAM.po b/bin/GWRAM.po
index 240f417..1b2dedc 100644
Binary files a/bin/GWRAM.po and b/bin/GWRAM.po differ
diff --git a/gwconio.h b/gwconio.h
new file mode 100644
index 0000000..36739f0
--- /dev/null
+++ b/gwconio.h
@@ -0,0 +1,9 @@
+#ifndef GWCONIO_H
+#define GWCONIO_H
+
+void gwcputsxy (unsigned char x, unsigned char y, const char* s);
+void gwcputs (const char* s);
+void __fastcall__ gwcputcxy (unsigned char x, unsigned char y, char c);
+void __fastcall__ gwcputc (char c);
+
+#endif /* GWCONIO_H */
diff --git a/gwconio.s b/gwconio.s
new file mode 100644
index 0000000..df337a1
--- /dev/null
+++ b/gwconio.s
@@ -0,0 +1,122 @@
+;
+; Ullrich von Bassewitz, 06.08.1998
+; Modified Sep. 6, 2020 by Zane Kaminski, Engineer @ Garrett's Workshop
+;
+;
+        .ifdef  __APPLE2ENH__
+        .constructor    initconio
+        .endif
+        .export         _gwcputcxy, _gwcputc
+        .export         _gwcputsxy, _gwcputs
+        .import         _gwconiomask
+        .import         gotoxy, VTABZ
+        .importzp       ptr1, tmp1
+
+        .include        "apple2.inc"
+
+        .segment        "ONCE"
+
+        .ifdef  __APPLE2ENH__
+initconio:
+        sta     SETALTCHAR      ; Switch in alternate charset
+        bit     LORES           ; Limit SET80COL-HISCR to text
+        rts
+        .endif
+
+        .code
+
+
+; void gwcputsxy (unsigned char x, unsigned char y, const char* s);             
+_gwcputsxy:
+        sta     ptr1            ; Save s for later
+        stx     ptr1+1
+        jsr     gotoxy          ; Set cursor, pop x and y
+        jmp     L0              ; Same as cputs...
+; void gwcputs (const char* s);
+_gwcputs: sta     ptr1            ; Save s
+        stx     ptr1+1
+L0:     ldy     #0
+L1:     lda     (ptr1),y
+        beq     L9              ; Jump if done
+        iny
+        sty     tmp1            ; Save offset
+        jsr     _gwcputc          ; Output char, advance cursor
+        ldy     tmp1            ; Get offset
+        bne     L1              ; Next char
+        inc     ptr1+1          ; Bump high byte
+        bne     L1
+; Done
+L9:     rts
+
+
+; void __fastcall__ gwcputcxy (unsigned char x, unsigned char y, char c);
+_gwcputcxy:
+        pha                     ; Save C
+        jsr     gotoxy          ; Call this one, will pop params
+        pla                     ; Restore C and run into _gwcputc
+; void __fastcall__ gwcputc (char c);
+_gwcputc:
+        cmp     #$0D            ; Test for \r = carrage return
+        beq     left
+        cmp     #$0A            ; Test for \n = line feed
+        beq     newline
+        eor     #$80            ; Invert high bit
+ ;       .ifndef __APPLE2ENH__
+        cmp     #$E0            ; Test for lowercase
+        bcc     cputdirect
+;        and     #$DF            ; Convert to uppercase
+        and     _gwconiomask     ; Convert to uppercase using mask
+;        .endif
+
+cputdirect:
+        jsr     putchar
+        inc     CH              ; Bump to next column
+        lda     CH
+        cmp     WNDWDTH
+        bcc     :+
+        jsr     newline
+left:   lda     #$00            ; Goto left edge of screen
+        sta     CH
+:       rts
+
+newline:
+        inc     CV              ; Bump to next line
+        lda     CV
+        cmp     WNDBTM
+        bcc     :+
+        lda     WNDTOP          ; Goto top of screen
+        sta     CV
+:       jmp     VTABZ
+
+putchar:
+        .ifdef  __APPLE2ENH__
+        ldy     INVFLG
+        cpy     #$FF            ; Normal character display mode?
+        beq     putchardirect
+        cmp     #$E0            ; Lowercase?
+        bcc     mask
+        and     #$7F            ; Inverse lowercase
+        bra     putchardirect
+        .endif
+mask:   and     INVFLG          ; Apply normal, inverse, flash
+
+putchardirect:
+        pha
+        ldy     CH
+        .ifdef  __APPLE2ENH__
+        bit     RD80VID         ; In 80 column mode?
+        bpl     put             ; No, just go ahead
+        tya
+        lsr                     ; Div by 2
+        tay
+        bcs     put             ; Odd cols go in main memory
+        bit     HISCR           ; Assume SET80COL
+        .endif
+put:    lda     (BASL),Y        ; Get current character
+        tax                     ; Return old character for _cgetc
+        pla
+        sta     (BASL),Y
+        .ifdef  __APPLE2ENH__
+        bit     LOWSCR          ; Doesn't hurt in 40 column mode
+        .endif
+        rts
\ No newline at end of file
diff --git a/main.c b/main.c
index 2f2bd9b..03c3d52 100644
--- a/main.c
+++ b/main.c
@@ -4,9 +4,14 @@
 
 #include "ram2e.h"
 #include "ram2gs.h"
+#include "gwconio.h"
+
+char gwconiomask;
 
 int main(void)
 {
+	gwconiomask = 0xFF;
+
 	// First clear screen
 	clrscr();
 
@@ -19,16 +24,15 @@ int main(void)
 			__asm__("sta $C073");
 			return EXIT_SUCCESS;
 		case APPLE_IIGS:
-			ram2gs_main();	
+			ram2gs_main();
 			return EXIT_SUCCESS;
 		default:
+			gwconiomask = 0xDF;
 			// If not on IIe or IIgs, show an error message and quit
-			gotoxy(0, 8);
-			cputs(" THIS PROGRAM REQUIRES APPLE IIE OR IIGS");
-			gotoxy(0, 10);
-			cputs(" PRESS ANY KEY TO QUIT.");
+			gwcputsxy(0, 8, " THIS PROGRAM REQUIRES APPLE IIE OR IIGS");
+			gwcputsxy(0, 10, " PRESS ANY KEY TO QUIT.");
 			cgetc(); // Wait for key
 			clrscr(); // Clear screen before quitting
 			return EXIT_SUCCESS;
-	} 
+	}
 }
diff --git a/ram2e.c b/ram2e.c
index c76196e..97b5c7a 100644
--- a/ram2e.c
+++ b/ram2e.c
@@ -6,6 +6,7 @@
 #include <stdint.h>
 
 #include "util.h"
+#include "gwconio.h"
 
 static char _rwsave[256];
 static char _rwsave0_1;
@@ -262,36 +263,28 @@ static void set_nvm(char mask) {
 
 static void menu(uint16_t bankcount)
 {
-	gotoxy(5, 1);
-	cputs("-- RAM2E Capacity Settings --");
+	gwcputsxy(5, 1, "-- RAM2E Capacity Settings --");
+	
 	if (bankcount < 2) { gotoxy(5, 3); }
 	else { gotoxy(4, 3); }
-	printf("Current RAM2E capacity: %d kB", bankcount * 64);
+	gwcputs("Current RAM2E capacity: ");
+	printf("%d", bankcount * 64);
+	gwcputs(" kB");
 
-	gotoxy(1, 5);
-	cputs("Select desired memory capacity:");
+	gwcputsxy(1, 5, "Select desired memory capacity:");
 
-	gotoxy(4, 7);
-	cputs("1. 64 kilobytes");
-	gotoxy(4, 9);
-	cputs("2. 512 kilobytes");
-	gotoxy(4, 11);
-	cputs("3. 1 megabyte");
-	gotoxy(4, 13);
-	cputs("4. 4 megabytes");
-	gotoxy(4, 15);
-	cputs("5. 8 megabytes");
+	gwcputsxy(4, 7, "1. 64 kilobytes");
+	gwcputsxy(4, 9, "2. 512 kilobytes");
+	gwcputsxy(4, 11, "3. 1 megabyte");
+	gwcputsxy(4, 13, "4. 4 megabytes");
+	gwcputsxy(4, 15, "5. 8 megabytes");
 
-	gotoxy(1, 18);
-	cputs("Capacity will be saved until power-off.");
+	gwcputsxy(1, 18, "Capacity will be saved until power-off.");
 
-	gotoxy(1, 20);
-	cputs("To remember capacity setting in");
-	gotoxy(1, 21);
-	cputs("nonvolatile memory, press Apple+number.");
+	gwcputsxy(1, 20, "To remember capacity setting in");
+	gwcputsxy(1, 21, "nonvolatile memory, press Apple+number.");
 
-	gotoxy(1, 23);
-	cputs("Press [Q] to quit without saving.");
+	gwcputsxy(1, 23, "Press [Q] to quit without saving.");
 }
 
 int ram2e_main(void)
@@ -306,10 +299,8 @@ int ram2e_main(void)
 	if(!auxram_detect() || !ram2e_detect()) {
 		ramworks_restore();
 		// If no RAM2E, show an error message and quit
-		gotoxy(0, 8);
-		cputs(" No RAM2E II detected.");
-		gotoxy(0, 10);
-		cputs(" Press any key to quit.");
+		gwcputsxy(0, 8, " No RAM2E II detected.");
+		gwcputsxy(0, 10, " Press any key to quit.");
 		cgetc(); // Wait for key
 		clrscr(); // Clear screen before quitting
 		return EXIT_SUCCESS;
@@ -338,13 +329,11 @@ int ram2e_main(void)
 			case '5': mask = 0x7F; break;
 			case 'R': {
 				reset_count++;
-				if (reset_count >= 100) {
-					// Show message about saving.
+				if (reset_count >= 25) {
+					// Show message about resetting.
 					clrscr(); // Clear screen
-					gotoxy(1, 8);
-					cputs("Resetting RAM2E settings.");
-					gotoxy(1, 9);
-					cputs("Do not turn off your Apple.");
+					gwcputsxy(1, 8, "Resetting RAM2E settings.");
+					gwcputsxy(1, 9, "Do not turn off your Apple.");
 
 					ufm_erase(); // Erase RAM2E settings memory
 					set_mask_temp(0x7F); // Set mask to default (0x7F)
@@ -354,11 +343,11 @@ int ram2e_main(void)
 					
 					// Show success message and quit
 					clrscr(); // Clear screen
-					gotoxy(1, 8);
-					cputs("RAM2E settings reset successfully.");
+					gwcputsxy(1, 8, "RAM2E settings reset successfully.");
 					goto end;
 				}
-			} default: continue;
+				continue;
+			} default: reset_count = 0; continue;
 		}
 
 		// Check if pressed with apple key. If so, save to nonvolatile memory.
@@ -374,36 +363,27 @@ int ram2e_main(void)
 
 	if (nvm) { // Save in NVM if requested.
 		// Show message about saving.
-		gotoxy(1, 8);
-		cputs("Saving RAM2E capacity setting.");
-		gotoxy(1, 9);
-		cputs("Do not turn off your Apple.");
+		gwcputsxy(1, 8, "Saving RAM2E capacity setting.");
+		gwcputsxy(1, 9, "Do not turn off your Apple.");
 		// Save capacity in nonvolatile memory.
 		set_nvm(mask);
 		// Wait for >= 500ms on even the fastest systems.
 		spin(32, 8);
 		// Print success message
 		clrscr(); // Clear screen
-		gotoxy(1, 8);
-		cputs("RAM2E capacity saved successfully.");
+		gwcputsxy(1, 8, "RAM2E capacity saved successfully.");
 	} else { // Print success message if not saving in NVM.
-		gotoxy(1, 8);
-		cputs("RAM2E capacity set successfully.");
+		gwcputsxy(1, 8, "RAM2E capacity set successfully.");
 	}
 
 	end:
 	if (nvm) { // Show end message for nonvolatile save
-		gotoxy(1, 10);
-		cputs("You may now turn off your Apple.");
-		gotoxy(1, 12);
-		cputs("You may also reset your Apple for");
-		gotoxy(1, 13);
-		cputs("the setting change to take effect.");
+		gwcputsxy(1, 10, "You may now turn off your Apple.");
+		gwcputsxy(1, 12, "You may also reset your Apple for");
+		gwcputsxy(1, 13, "the setting change to take effect.");
 	} else { // Show end message for volatile save
-		gotoxy(1, 10);
-		cputs("Please reset your Apple for");
-		gotoxy(1, 11);
-		cputs("the setting change to take effect.");
+		gwcputsxy(1, 10, "Please reset your Apple for");
+		gwcputsxy(1, 11, "the setting change to take effect.");
 	}
 	// Don't quit. Instead leave prompt asking user to reset.
 	while(1) { cgetc(); }
diff --git a/ram2gs.c b/ram2gs.c
index d430f6f..ca1d0a0 100644
--- a/ram2gs.c
+++ b/ram2gs.c
@@ -6,6 +6,7 @@
 #include <stdint.h>
 
 #include "util.h"
+#include "gwconio.h"
 #include "ram2gs_asm.h"
 
 static void ram2gs_erase() { ram2gs_cmd(0x28); }
@@ -40,29 +41,24 @@ static void ram2gs_setnvm(char en8meg) {
 static void menu(void)
 {
 	uint8_t bankcount = ram2gs_getsize();
-	gotoxy(5, 1);
-	cputs("-- RAM2GS Capacity Settings --");
+	gwcputsxy(5, 1, "-- RAM2GS Capacity Settings --");
+
 	gotoxy(4, 3);
-	printf("Current RAM2GS capacity: %d kB", bankcount * 64);
+	gwcputs("Current RAM2GS capacity: ");
+	printf("%d", bankcount * 64);
+	gwcputs(" kB");
 
-	gotoxy(1, 6);
-	cputs("Select desired memory capacity:");
+	gwcputsxy(1, 6, "Select desired memory capacity:");
 
-	gotoxy(4, 8);
-	cputs("1. 4 megabytes");
-	gotoxy(4, 10);
-	cputs("2. 8 megabytes");
+	gwcputsxy(4, 8, "1. 4 megabytes");
+	gwcputsxy(4, 10, "2. 8 megabytes");
 
-	gotoxy(1, 18);
-	cputs("Capacity will be saved until power-off.");
+	gwcputsxy(1, 18, "Capacity will be saved until power-off.");
 
-	gotoxy(1, 20);
-	cputs("To remember capacity setting in");
-	gotoxy(1, 21);
-	cputs("nonvolatile memory, press Apple+number.");
+	gwcputsxy(1, 20, "To remember capacity setting in");
+	gwcputsxy(1, 21, "nonvolatile memory, press Apple+number.");
 
-	gotoxy(1, 23);
-	cputs("Press [Q] to quit without saving.");
+	gwcputsxy(1, 23, "Press [Q] to quit without saving.");
 }
 
 int ram2gs_main(void)
@@ -75,10 +71,8 @@ int ram2gs_main(void)
 	#ifndef SKIP_RAM2GS_DETECT
 	if(!ram2gs_detect()) {
 		// If no RAM2GS, show an error message and quit
-		gotoxy(0, 8);
-		cputs(" No RAM2GS II detected.");
-		gotoxy(0, 10);
-		cputs(" Press any key to quit.");
+		gwcputsxy(0, 8, " No RAM2GS II detected.");
+		gwcputsxy(0, 10, " Press any key to quit.");
 		cgetc(); // Wait for key
 		clrscr(); // Clear screen before quitting
 		return EXIT_SUCCESS;
@@ -102,13 +96,11 @@ int ram2gs_main(void)
 			case '2': en8meg = 1; ram2gs_set8mb(); break;
 			case 'R': {
 				reset_count++;
-				if (reset_count >= 100) {
-					// Show message about saving.
+				if (reset_count >= 25) {
+					// Show message about resetting.
 					clrscr(); // Clear screen
-					gotoxy(1, 8);
-					cputs("Resetting RAM2GS settings.");
-					gotoxy(1, 9);
-					cputs("Do not turn off your Apple.");
+					gwcputsxy(1, 8, "Resetting RAM2GS settings.");
+					gwcputsxy(1, 9, "Do not turn off your Apple.");
 
 					ram2gs_erase(); // Erase RAM2GS settings memory
 					ram2gs_set8mb(); // Enable 8 megabytes now
@@ -118,11 +110,11 @@ int ram2gs_main(void)
 					
 					// Show success message and quit
 					clrscr(); // Clear screen
-					gotoxy(1, 8);
-					cputs("RAM2GS settings reset successfully.");
+					gwcputsxy(1, 8, "RAM2GS settings reset successfully.");
 					goto end;
 				}
-			} default: continue;
+				continue;
+			} default: reset_count = 0; continue;
 		}
 
 		// Check if pressed with apple key. If so, save to nonvolatile memory.
@@ -135,36 +127,27 @@ int ram2gs_main(void)
 
 	if (nvm) { // Save in NVM if requested.
 		// Show message about saving.
-		gotoxy(1, 8);
-		cputs("Saving RAM2GS capacity setting.");
-		gotoxy(1, 9);
-		cputs("Do not turn off your Apple.");
+		gwcputsxy(1, 8, "Saving RAM2GS capacity setting.");
+		gwcputsxy(1, 9, "Do not turn off your Apple.");
 		// Save capacity in nonvolatile memory.
 		ram2gs_setnvm(en8meg);
 		// Wait for >= 500ms on even the fastest systems.
 		spin(33, 8);
 		// Print success message
 		clrscr(); // Clear screen
-		gotoxy(1, 8);
-		cputs("RAM2GS capacity saved successfully.");
+		gwcputsxy(1, 8, "RAM2GS capacity saved successfully.");
 	} else { // Print success message if not saving in NVM.
-		gotoxy(1, 8);
-		cputs("RAM2GS capacity set successfully.");
+		gwcputsxy(1, 8, "RAM2GS capacity set successfully.");
 	}
 
 	end:
 	if (nvm) { // Show end message for nonvolatile save
-		gotoxy(1, 10);
-		cputs("You may now turn off your Apple.");
-		gotoxy(1, 12);
-		cputs("You may also reset your Apple for");
-		gotoxy(1, 13);
-		cputs("the setting change to take effect.");
+		gwcputsxy(1, 10, "You may now turn off your Apple.");
+		gwcputsxy(1, 12, "You may also reset your Apple for");
+		gwcputsxy(1, 13, "the setting change to take effect.");
 	} else { // Show end message for volatile save
-		gotoxy(1, 10);
-		cputs("Please reset your Apple for");
-		gotoxy(1, 11);
-		cputs("the setting change to take effect.");
+		gwcputsxy(1, 10, "Please reset your Apple for");
+		gwcputsxy(1, 11, "the setting change to take effect.");
 	}
 	// Don't quit. Instead leave prompt asking user to reset.
 	while(1) { cgetc(); }
diff --git a/ramtest.c b/ramtest.c
new file mode 100644
index 0000000..e4ec7a2
--- /dev/null
+++ b/ramtest.c
@@ -0,0 +1,71 @@
+#include <stdlib.h>
+#include <conio.h>
+#include <string.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <stdint.h>
+
+#include "util.h"
+#include "gwconio.h"
+#include "ramtestpat.c"
+
+#define TEST_SIZE 8*1024*1024
+
+char test_run() {
+	// Put copy stub in low RAM 
+	for (uint32_t a = 0; a < TEST_SIZE) {
+		wr(a, getpat(a));
+	}
+
+	for (uint32_t a = 0; a < TEST_SIZE) {
+		char d = rd(a);
+		if (d != getpat(a)) { return -1; }
+	}
+
+	return 0;
+}
+
+static inline char getpat(uint32_t a) {
+	return ramtestpat[a % RAMTESTPAT_SIZE];
+}
+
+static char rd(uint32_t a) {
+	uint16_t al = a & 0xFFFF;
+	if (al < 0x0200) { return rd_zplc(a); }
+	else if (al < 0xC000) { return rd_mid(a); }
+	else if (al < 0xD000) { return rd_lc2(a); }
+	else { return rd_zplc(a); }
+}
+
+static char rd_zplc(uint32_t a) {
+	
+}
+
+static char rd_mid(uint32_t a) {
+	
+}
+
+static char rd_lc2(uint32_t a) {
+	
+}
+
+static char wr(uint32_t a, char d) {
+	uint16_t al = a & 0xFFFF;
+	if (al < 0x0200) { wr_zplc(a, d); }
+	else if (al < 0xC000) { wr_mid(a, d); }
+	else if (al < 0xD000) { wr_lc2(a, d); }
+	else { wr_zplc(a, d); }
+}
+
+static char rd_zplc(uint32_t a) {
+	
+}
+
+static char rd_mid(uint32_t a) {
+	
+}
+
+static char rd_lc2(uint32_t a) {
+	
+}
+
diff --git a/ramtest.h b/ramtest.h
new file mode 100644
index 0000000..c9e8909
--- /dev/null
+++ b/ramtest.h
@@ -0,0 +1,6 @@
+#ifndef TEST_H
+#define TEST_H
+
+char test_run();
+
+#endif /* TEST_H */
diff --git a/ramtestpat.c b/ramtestpat.c
new file mode 100644
index 0000000..fd3edc9
--- /dev/null
+++ b/ramtestpat.c
@@ -0,0 +1,4 @@
+#define RAMTESTPAT_SIZE 4097
+char ramtestpat[RAMTESTPAT_SIZE] = {
+	1, 2, 3, 4, 5, 6, 7, 8, 9
+};
\ No newline at end of file
diff --git a/util.c b/util.c
index a597700..4584d13 100644
--- a/util.c
+++ b/util.c
@@ -49,4 +49,4 @@ void spin(uint8_t x, uint8_t y) {
 	// Wait a frame when finished
 	while (*VBL < 0);
 	while (*VBL >= 0);
-}
\ No newline at end of file
+}