added printer support

.gitignore

@@ -1,6 +1,8 @@
 apple2e.rom
 disk.rom
+parallel.rom
 *~
 *.o
 apple/applemmu-rom.h
 apple/diskii-rom.h
+apple/parallel-rom.h

Makefile

@@ -1,12 +1,12 @@
 LDFLAGS=-L/usr/local/lib -lopencv_core -lopencv_highgui -lopencv_imgproc -lopencv_features2d -lopencv_calib3d
 
-CXXFLAGS=-Wall -I .. -I . -I apple -O3
+CXXFLAGS=-Wall -I .. -I . -I apple -I opencv -O3
 
 TSRC=cpu.cpp util/testharness.cpp
 
-OPENCVOBJS=cpu.o opencv/dummy-speaker.o opencv/opencv-display.o opencv/opencv-keyboard.o opencv/opencv-paddles.o opencv/opencv-filemanager.o apple/appledisplay.o apple/applekeyboard.o apple/applemmu.o apple/applevm.o apple/diskii.o apple/nibutil.o apple/slot.o RingBuffer.o globals.o opencv/aiie.o
+OPENCVOBJS=cpu.o opencv/dummy-speaker.o opencv/opencv-display.o opencv/opencv-keyboard.o opencv/opencv-paddles.o opencv/opencv-filemanager.o apple/appledisplay.o apple/applekeyboard.o apple/applemmu.o apple/applevm.o apple/diskii.o apple/nibutil.o RingBuffer.o globals.o opencv/aiie.o apple/parallelcard.o apple/fx80.o opencv/opencv-printer.o
 
-ROMS=apple/applemmu-rom.h apple/diskii-rom.h
+ROMS=apple/applemmu-rom.h apple/diskii-rom.h apple/parallel-rom.h
 
 all: opencv
 
@@ -14,17 +14,18 @@ opencv: roms $(OPENCVOBJS)
 	g++ $(LDFLAGS) -o aiie-opencv $(OPENCVOBJS)
 
 clean:
-	rm -f *.o *~ */*.o */*~ testharness.basic testharness.verbose testharness.extended aiie-opencv apple/diskii-rom.h apple/applemmu-rom.h
+	rm -f *.o *~ */*.o */*~ testharness.basic testharness.verbose testharness.extended aiie-opencv apple/diskii-rom.h apple/applemmu-rom.h apple/parallel-rom.h
 
 test: $(TSRC)
 	g++ $(CXXFLAGS) -DBASICTEST $(TSRC) -o testharness.basic
 	g++ $(CXXFLAGS) -DVERBOSETEST $(TSRC) -o testharness.verbose
 	g++ $(CXXFLAGS) -DEXTENDEDTEST $(TSRC) -o testharness.extended
 
-roms: apple2e.rom disk.rom
-	./util/genrom.pl apple2e.rom disk.rom
+roms: apple2e.rom disk.rom parallel.rom
+	./util/genrom.pl apple2e.rom disk.rom parallel.rom
 
 apple/applemmu-rom.h: roms
 
 apple/diskii-rom.h: roms
 
+apple/parallel-rom.h: roms

README.md

@@ -26,16 +26,21 @@ As with many emulators, you have to go get the ROMs yourself. I've got
 the ROMs that I dumped out of my Apple //e. You can probably get yours
 a lot easier.
 
-There are two files that you'll need:
+There are three files that you'll need:
 
 * apple2e.rom  -- a 32k dump of the entire Apple //e ROM
 * disk.rom     -- a 256 byte dump of the DiskII controller ROM (16-sector P5)
+* parallel.rom -- a 256 byte dump of either of the two Apple Parallel cards
 
-The MD5 sums of those two files are:
+The MD5 sums of those files are:
 
 * 003a780b461c96ae3e72861ed0f4d3d9 apple2e.rom
 * 2020aa1413ff77fe29353f3ee72dc295 disk.rom
 
+* 5902996f16dc78fc013f6e1db14805b3 parallel.rom
+-or-
+  d666ea749f79a35faa31b4e9a7878eb7 parallel.rom
+
 From those, the appropriate headers will be automatically generated by
 "make roms" (or any other target that relies on the ROMs).
 

apple/applevm.cpp

@@ -19,6 +19,10 @@ AppleVM::AppleVM()
   ((AppleMMU *)mmu)->setSlot(6, disk6);
 
   keyboard = new AppleKeyboard((AppleMMU *)mmu);
+
+  parallel = new ParallelCard();
+  ((AppleMMU *)mmu)->setSlot(1, parallel);
+
 #ifdef TEENSYDUINO
   teensyClock = new TeensyClock((AppleMMU *)mmu);
   ((AppleMMU *)mmu)->setSlot(7, teensyClock);
@@ -51,6 +55,7 @@ void AppleVM::cpuMaintenance(uint32_t cycles)
   }
 
   keyboard->maintainKeyboard(cycles);
+  parallel->update();
 }
 
 void AppleVM::Reset()

apple/applevm.h

@@ -5,6 +5,7 @@
 #include "appledisplay.h"
 #include "diskii.h"
 #include "vmkeyboard.h"
+#include "parallelcard.h"
 #ifdef TEENSYDUINO
 #include "teensy-clock.h"
 #endif
@@ -32,6 +33,7 @@ class AppleVM : public VM {
  protected:
   DiskII *disk6;
   VMKeyboard *keyboard;
+  ParallelCard *parallel;
 #ifdef TEENSYDUINO
   TeensyClock *teensyClock;
 #endif

apple/fx80.cpp

@@ -0,0 +1,259 @@
+#include <string.h> // memset
+#include <stdint.h>
+#include <stdio.h> // while debugging
+
+#include "fx80.h"
+#include "fx80-font.h"
+
+#include "globals.h"
+
+Fx80::Fx80()
+{
+  clearLine();
+  escapeMode = false;
+  proportionalMode = false;
+  carriageDot = 0;
+  twoSixteenthsLineSpacing = 36; // 1/6" line spacing is the default (12 pixels)
+  graphicsWidth = 960;
+  ninePinGraphics = false;
+  escapeModeActive = 0;
+  escapeModeExpectingBytes = -1;
+  escapeModeLengthByteCount = 0;
+  escapeModeLength = 0;
+}
+
+Fx80::~Fx80()
+{
+}
+
+void Fx80::handleEscape(uint8_t c)
+{
+  switch (c & 0x7F) {
+  case 75: // FIXME: single-density 480 dpi graphics line
+    graphicsWidth = 480;
+    break;
+  case 76: // FIXME: low-speed double-density graphics line
+  case 89: // FIXME: high-speed double-density graphics
+    graphicsWidth = 960;
+    escapeModeActive = c;
+    escapeModeExpectingBytes = -1;
+    escapeModeLengthByteCount = 0;
+    break;
+  case 90: // FIXME: quadruple-density graphics
+    graphicsWidth = 960 * 2;
+    break;
+  case 94: // FIXME: enable 9-pin graphics
+    escapeModeActive = c;
+    escapeModeExpectingBytes = -1;
+    escapeModeLengthByteCount = 0;
+    break;
+  case 65: // set line spacing
+    escapeModeActive = c;
+    escapeModeExpectingBytes = 1;
+    break;
+  case 33: // FIXME: mode select
+  case 35: // FIXME: enable 8-bit reception from computer
+  case 37: // FIXME: pick charset from ROM
+  case 38: // FIXME: define chars in RAM
+  case 42: // FIXME: set vertical tabs
+  case 43: // FIXME: set form length (default: 66 lines, 11 inches)
+  case 68: // FIXME: reset current tabs, pitch
+  case 69: // FIXME: emphasized mode on
+  case 70: // FIXME: emphasized mode off
+  case 71: // FIXME: double-strike on
+  case 72: // FIXME: double-strike off
+  case 73: // FIXME: enable printing chr[0..31] except control codes
+  case 74: // FIXME: line feed immediately, n/216th of an inch
+  case 77: // FIXME: elite mode (12cpi)
+  case 78: // FIXME: turn on skip-over perforation
+  case 79: // FIXME: turn off skip-over perforation
+  case 80: // FIXME: disable elite; enable pica mode (unless compressed is enabled)
+  case 81: // FIXME: cancel print buffer, set right margin
+  case 82: // FIXME: select international charset
+  case 83: // FIXME: script mode on
+  case 84: // FIXME: script mode off
+  case 85: // FIXME: unidirecitonal mode on/off
+  case 87: // FIXME: expanded mode
+  case 98: // FIXME: set vertical tab
+  case 105: // FIXME: immediate mode on
+  case 106: // FIXME: immediate reverse linefeed 1/216"
+  case 108: // FIXME: set left margin
+  case 112: // FIXME: turn on proportional mode
+  case 115: // FIXME: print speed
+    printf("unhandled escape code %d\n", c);
+    break;
+
+  }
+}
+
+void Fx80::handleActiveEscapeMode(uint8_t c)
+{
+  switch (escapeModeActive) {
+  case 76:
+  case 89:
+    // one column of double-density graphics
+    {
+      // FIXME: abstract this - second time it's being used
+      uint16_t byteIdx = (carriageDot+0) / 8 + (FX80_MAXWIDTH/8) * 0;
+      uint8_t bitIdx = (carriageDot+0) % 8;
+      for (int i=0; i<8; i++) {
+	if (c & (1 << (7-i))) {
+	  rowOfBits[byteIdx] |= (1 << (7-bitIdx));
+	}
+	byteIdx += (FX80_MAXWIDTH/8);
+      }
+    }
+    carriageDot++;
+    break;
+  case 65: // set line spacing to n/72ths of an inch (n=0-85)
+    twoSixteenthsLineSpacing = 3 * c;
+
+    break;
+  default:
+    printf("unhandled active escape mode %d\n", c);
+    break;
+  }
+}
+
+void Fx80::input(uint8_t c)
+{
+  if (escapeMode) {
+    handleEscape(c);
+    escapeMode = false;
+    return;
+  }
+
+  // Is this an escape mode that gets a fixed amount of input?
+  if (escapeModeActive) {
+    if (escapeModeExpectingBytes < 0) {
+      // We're reading 2 bytes of length
+      escapeModeLengthByteCount++;
+      if (escapeModeLengthByteCount == 1) {
+	escapeModeLength = c;
+      } else {
+	escapeModeLength |= (c << 8);
+	escapeModeExpectingBytes = escapeModeLength;
+      }
+      return;
+    } else {
+      escapeModeExpectingBytes--;
+    }
+
+    handleActiveEscapeMode(c);
+    if (escapeModeExpectingBytes == 0) {
+      escapeModeActive = 0;
+    }
+    return;
+  }
+
+  if (c == 27) {
+    escapeMode = true;
+    return;
+  }
+
+  // FIXME: all these also work as 128 + c
+  switch (c & 0x7F) {
+  case 0: // FIXME: terminate horiz/vert tab setting
+    return;
+  case 7: // beep
+    return;
+  case 8: // FIXME: "at current width" instead of this fixed-12
+    if (carriageDot >= 12) 
+      carriageDot -= 12;
+    return;
+  case 9: // FIXME: HTAB
+    return;
+  case 10:
+    lineFeed();
+    return;
+  case 11: // FIXME: VTAB
+    return;
+  case 12: // FIXME: Form Feed
+    lineFeed();
+    return;
+  case 13:
+    carriageDot = 0;
+    // lineFeed(); // FIXME: this was controlled by a switch
+    return;
+  case 14: // FIXME: Shift Out - turns on "Expanded Mode"
+  case 15: // FIXME: Shift In - turns on "Compressed Mode"
+  case 17: // FIXME: DC1
+  case 18: // FIXME: DC2
+  case 19: // FIXME: DC3
+  case 20: // FIXME: DC4
+  case 24: // FIXME: cancel text in print buffer; not the same as "clear line"
+  case 127: // FIXME: delete last char in the print buffer
+    return;
+    
+  }
+
+  // normal print - send the character verbatim...
+  addCharacter(c & 0x7F); // FIXME: masking high bit
+}
+
+// add the given character on the line at the current carriage dot position
+void Fx80::addCharacter(uint8_t c)
+{
+  uint8_t width = Fx80Font[c * 19];
+  // FIXME: is 12 right for non-proportional mode?
+  if (!proportionalMode)
+    width = 12;
+
+  // Each row for this char has two bytes of bits, left-to-right, high
+  // bit leftmost.
+
+  const uint8_t *charPtr = &Fx80Font[c * 19];
+  charPtr++;
+
+  for (uint8_t row=0; row<9; row++) {
+    // Don't print beyond end of line!
+
+    for (uint8_t xoff = 0; xoff < 8; xoff++) {
+
+      if (carriageDot+xoff >= FX80_MAXWIDTH)
+	continue;
+
+      uint16_t byteIdx = (carriageDot+xoff) / 8 + (FX80_MAXWIDTH/8) * row;
+      uint8_t bitIdx = (carriageDot+xoff) % 8;
+
+      // We never clear bits - it's possible to overstrike, so just add more...
+      if (charPtr[2*row] & (1 << (7-xoff))) {
+	rowOfBits[byteIdx] |= (1 << (7-bitIdx));
+      }
+      if (charPtr[2*row+1] & (1 << (7-xoff))) {
+	rowOfBits[byteIdx+1] |= (1 << (7-bitIdx));
+      }
+    }
+  }
+
+  carriageDot += 12; // FIXME
+}
+
+void Fx80::lineFeed()
+{
+  emitLine();
+  g_printer->moveDownPixels(twoSixteenthsLineSpacing / 3); // pixel estimation
+  clearLine();
+}
+
+void Fx80::clearLine()
+{
+  memset(rowOfBits, 0, sizeof(rowOfBits));
+}
+
+void Fx80::emitLine()
+{
+  // FIXME: this is very wrong. Doesn't deal with line advance
+  // properly. But it's good enough for debugging basic operation.
+  g_printer->addLine(rowOfBits);
+}
+
+void Fx80::update()
+{
+  // The onscreen window needs to update regularly, and we probably
+  // want to periodically flush the Teensy buffer.
+  if (g_printer) {
+    g_printer->update();
+  }
+}
+

apple/fx80.h

@@ -0,0 +1,75 @@
+#ifndef __FX80_H
+#define __FX80_H
+
+#include <stdint.h>
+
+/* maximum width, in dots, that we're supporting. The FX80 supported
+ * up to 1920 ("quadruple density") -- which I'm not, b/c that's
+ * overkill for what I'm doing at the moment. I'm supporting "double density"
+ * (960 dots per 8-inch line).
+ *
+ * My general strategy here is to fill up a line with bits until the
+ * printer thinks it needs to move to the next line; and then do
+ * something with the bits (send them to a printer, a screen, a file,
+ * whatever). This gets both graphics and text modes in one swell foop.
+ *
+ * There is the troublesome "9-pin graphics mode" where each column of
+ * bits is > 1 byte of data; for that, we keep an extra "rowOfPin9"
+ * bits, which is just a bit stream across the width. It would be
+ * easier to make rowOfBits be uint16_t but it would consume more RAM,
+ * and I'm trying to minimize that as I'm down to about 13k of free
+ * space in the Teensy!
+ */
+
+#define FX80_MAXWIDTH 960
+
+#ifdef TEENSYDUINO
+class TeensyPrinter;
+#else
+class OpenCVPrinter;
+#endif
+
+class Fx80 {
+ public:
+  Fx80();
+  ~Fx80();
+
+  void input(uint8_t c);
+
+  void update();
+
+ private:
+  void lineFeed();
+  void clearLine();
+
+  void addCharacter(uint8_t c);
+
+  void handleEscape(uint8_t c);
+  void handleActiveEscapeMode(uint8_t c);
+  void emitLine();
+
+ protected:
+  bool escapeMode;
+  bool proportionalMode;
+
+  uint16_t carriageDot; // what dot-column we are at
+
+  // Line spacing. 1/216th of an inch is 1/3 of a dot, which is the minimum 
+  // supported by the FX-80. This is usually set in terms of 72nds, and 
+  // it's unlikely that I'll render anything at 1/216, but might as
+  // well interpret it the way the printer understands it.
+  // (That means 8/72, which is a setting of 24 here, is 8 dots tall.)
+  uint16_t twoSixteenthsLineSpacing;
+
+  uint16_t graphicsWidth;
+  bool ninePinGraphics;
+  uint8_t escapeModeActive;
+  int32_t escapeModeExpectingBytes;
+  uint8_t escapeModeLengthByteCount;
+  uint16_t escapeModeLength;
+
+  // 9 pixel-rows of (FX80_MAXWIDTH) bits (stuffed in 8-bit bytes)
+  uint8_t rowOfBits[(FX80_MAXWIDTH/8)*9];
+};
+
+#endif

apple/parallelcard.cpp

@@ -0,0 +1,50 @@
+#include "parallelcard.h"
+#include <string.h>
+
+#include "parallel-rom.h"
+#include "fx80.h"
+
+ParallelCard::ParallelCard()
+{
+  fx80 = new Fx80();
+}
+
+ParallelCard::~ParallelCard()
+{
+}
+
+void ParallelCard::Reset()
+{
+}
+
+uint8_t ParallelCard::readSwitches(uint8_t s)
+{
+  return 0xFF;
+}
+
+void ParallelCard::writeSwitches(uint8_t s, uint8_t v)
+{
+  if (s == 0x00) {
+    fx80->input(v);
+  } else {
+    //    printf("unknown switch 0x%X\n", s);
+  }
+}
+
+void ParallelCard::loadROM(uint8_t *toWhere)
+{
+#ifdef TEENSYDUINO
+  Serial.println("loading parallel slot rom");
+  for (uint16_t i=0; i<=0xFF; i++) {
+    toWhere[i] = pgm_read_byte(&romData[i]);
+  }
+#else
+  printf("loading parallel slot rom\n");
+  memcpy(toWhere, romData, 256);
+#endif
+}
+
+void ParallelCard::update()
+{
+  fx80->update();
+}

apple/parallelcard.h

@@ -0,0 +1,32 @@
+#ifndef __PARALLELCARD_H
+#define __PARALLELCARD_H
+
+#ifdef TEENSYDUINO
+#include <Arduino.h>
+#else
+#include <stdint.h>
+#include <stdio.h>
+#endif
+
+#include "applemmu.h"
+#include "slot.h"
+
+class Fx80;
+
+class ParallelCard : public Slot {
+ public:
+  ParallelCard();
+  virtual ~ParallelCard();
+
+  virtual void Reset(); // used by BIOS cold-boot
+  virtual uint8_t readSwitches(uint8_t s);
+  virtual void writeSwitches(uint8_t s, uint8_t v);
+  virtual void loadROM(uint8_t *toWhere);
+  
+  void update();
+
+ private:
+  Fx80 *fx80;
+};
+
+#endif

apple/slot.cpp

@@ -1,9 +0,0 @@
-#include "slot.h"
-
-Slot::Slot()
-{
-}
-
-Slot::~Slot()
-{
-}

apple/slot.h

@@ -11,8 +11,7 @@
 
 class Slot {
  public:
-  Slot();
-  ~Slot();
+  virtual ~Slot() {};
 
   virtual void Reset() = 0; // for use at cold-boot
 

globals.cpp

@@ -7,5 +7,6 @@ PhysicalDisplay *g_display = NULL;
 PhysicalKeyboard *g_keyboard = NULL;
 PhysicalSpeaker *g_speaker = NULL;
 PhysicalPaddles *g_paddles = NULL;
+PhysicalPrinter *g_printer = NULL;
 int16_t g_volume;
 uint8_t g_displayType = 3; // FIXME m_perfectcolor

globals.h

@@ -7,6 +7,7 @@
 #include "physicalkeyboard.h"
 #include "physicalspeaker.h"
 #include "physicalpaddles.h"
+#include "physicalprinter.h"
 
 extern FileManager *g_filemanager;
 extern Cpu *g_cpu;
@@ -15,5 +16,6 @@ extern PhysicalDisplay *g_display;
 extern PhysicalKeyboard *g_keyboard;
 extern PhysicalSpeaker *g_speaker;
 extern PhysicalPaddles *g_paddles;
+extern PhysicalPrinter *g_printer;
 extern int16_t g_volume;
 extern uint8_t g_displayType;

opencv/aiie.cpp

@@ -12,6 +12,7 @@
 #include "dummy-speaker.h"
 #include "opencv-paddles.h"
 #include "opencv-filemanager.h"
+#include "opencv-printer.h"
 
 #include "globals.h"
 
@@ -247,14 +248,14 @@ static void *cpu_thread(void *dummyptr) {
 #endif
 
     if (send_rst) {
-#if 0
+#if 1
       printf("Sending reset\n");
-      //   g_cpu->Reset();
+      g_cpu->Reset();
       
       // testing startup keyboard presses - perform Apple //e self-test
-      g_vm->getKeyboard()->keyDepressed(RA);
-      g_vm->Reset();
-      g_cpu->Reset();
+      //g_vm->getKeyboard()->keyDepressed(RA);
+      //g_vm->Reset();
+      //g_cpu->Reset();
       //((AppleVM *)g_vm)->insertDisk(0, "disks/DIAGS.DSK");
       
 #else
@@ -293,6 +294,7 @@ static void *cpu_thread(void *dummyptr) {
 int main(int argc, char *argv[])
 {
   g_speaker = new DummySpeaker();
+  g_printer = new OpenCVPrinter();
 
   // create the filemanager - the interface to the host file system.
   g_filemanager = new OpenCVFileManager();

opencv/opencv-filemanager.cpp

@@ -61,7 +61,7 @@ const char *OpenCVFileManager::fileName(int8_t fd)
   return cachedNames[fd];
 }
 
-int8_t OpenCVFileManager::readDir(const char *where, const char *suffix, char *outputFN, int8_t startIdx, uint8_t maxlen)
+int8_t OpenCVFileManager::readDir(const char *where, const char *suffix, char *outputFN, int8_t startIdx, uint16_t maxlen)
 {
   // not used in this version
   return -1;

opencv/opencv-printer.cpp

@@ -0,0 +1,75 @@
+#include "opencv-printer.h"
+
+#include "opencv2/core/core.hpp"
+#include "opencv2/imgproc/imgproc.hpp"
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/calib3d/calib3d.hpp"
+#include "opencv2/features2d/features2d.hpp"
+
+using namespace cv;
+using namespace std;
+
+#define WINDOWNAME "printer"
+
+#define HEIGHT 800
+#define NATIVEWIDTH 960 // FIXME: printer can change density...
+
+
+//#define WIDTH 384 // emulating the teeny printer I've got
+#define WIDTH 960
+
+OpenCVPrinter::OpenCVPrinter()
+{
+  pixels = new Mat(HEIGHT, WIDTH, CV_8U);
+  *pixels = cv::Scalar(0xFF);
+  ypos = 0;
+  isDirty = false;
+  namedWindow(WINDOWNAME, CV_WINDOW_AUTOSIZE);
+}
+
+OpenCVPrinter::~OpenCVPrinter()
+{
+  delete pixels; pixels = NULL;
+}
+
+void OpenCVPrinter::update()
+{
+  if (isDirty) {
+    imshow(WINDOWNAME, *pixels);
+    isDirty = false;
+  }
+}
+
+void OpenCVPrinter::addLine(uint8_t *rowOfBits)
+{
+  isDirty = true;
+  for (int yoff=0; yoff<8; yoff++) {
+    // 960 pixels == 120 bytes -- FIXME
+    for (int i=0; i<(NATIVEWIDTH/8); i++) {
+      uint8_t bv = rowOfBits[yoff*120+i];
+      for (int xoff=0; xoff<8; xoff++) {
+	// scale X from "actual FX80" coordinates to "real printer" coordinates
+	uint16_t actualX = (uint16_t)(((float)(i*8+xoff) * (float)WIDTH) / (float)NATIVEWIDTH);
+
+	uint8_t oldPixel = pixels->at<uchar>((ypos + yoff)%HEIGHT, actualX);
+	uint8_t pixelColor = (bv & (1 << (7-xoff))) ? 0x00 : 0xFF;
+	// Make sure to preserve any pixels we've already drawn
+	pixels->at<uchar>((ypos + yoff)%HEIGHT, actualX) = ~(~oldPixel | ~pixelColor);
+      }
+    }
+  }
+
+  if (ypos >= HEIGHT) {
+    ypos = 0;
+  }
+}
+
+void OpenCVPrinter::moveDownPixels(uint8_t p)
+{
+  ypos+= p;
+  if (ypos >= HEIGHT) {
+    // clear page & restart
+    *pixels = cv::Scalar(0xFF);
+    ypos = 0;
+  }
+}

opencv/opencv-printer.h

@@ -0,0 +1,31 @@
+#ifndef __OPENCV_PRINTER_H
+#define __OPENCV_PRINTER_H
+
+#include <stdlib.h>
+
+#include "opencv2/core/core.hpp"
+#include "opencv2/imgproc/imgproc.hpp"
+#include "opencv2/highgui/highgui.hpp"
+#include "opencv2/calib3d/calib3d.hpp"
+#include "opencv2/features2d/features2d.hpp"
+
+#include "physicalprinter.h"
+
+class OpenCVPrinter : public PhysicalPrinter {
+ public:
+  OpenCVPrinter();
+  virtual ~OpenCVPrinter();
+
+  virtual void addLine(uint8_t *rowOfBits); // must be 960 pixels wide (120 bytes)
+
+  virtual void update();
+
+  virtual void moveDownPixels(uint8_t p);
+
+ private:
+  bool isDirty;
+  uint16_t ypos;
+  cv::Mat *pixels;
+};
+
+#endif

physicalprinter.h

@@ -0,0 +1,13 @@
+#ifndef __PHYSICALPRINTER_H
+#define __PHYSICALPRINTER_H
+
+class PhysicalPrinter {
+ public:
+  virtual ~PhysicalPrinter() {}
+  // must be 960 pixels wide (120 bytes)
+  virtual void addLine(uint8_t *rowOfBits) = 0; 
+  virtual void update() = 0;
+  virtual void moveDownPixels(uint8_t p) = 0;
+};
+
+#endif

teensy/fx80-font.h

@@ -0,0 +1 @@
+../apple/fx80-font.h

teensy/fx80.cpp

@@ -0,0 +1 @@
+../apple/fx80.cpp

teensy/fx80.h

@@ -0,0 +1 @@
+../apple/fx80.h

teensy/parallel-rom.h

@@ -0,0 +1 @@
+../apple/parallel-rom.h

teensy/parallelcard.cpp

@@ -0,0 +1 @@
+../apple/parallelcard.cpp

teensy/parallelcard.h

@@ -0,0 +1 @@
+../apple/parallelcard.h

teensy/physicalprinter.h

@@ -0,0 +1 @@
+../physicalprinter.h

teensy/teensy-printer.cpp

@@ -0,0 +1,78 @@
+#include <Arduino.h>
+#include "teensy-printer.h"
+
+#define WIDTH (384)       // width of printer, in dots
+#define NATIVEWIDTH 960 // 
+
+#define RXPIN 57
+#define TXPIN 56
+
+TeensyPrinter::TeensyPrinter()
+{
+  ser = new SoftwareSerial(RXPIN, TXPIN, false);
+  ser->begin(19200);
+  char buf[6] = { 27, '@',          // init command '@'
+		  27, '3', 8,       // ESC-3 is "set line spacing"; default 30
+		  0                 // terminator
+  };
+  ser->print(buf);
+}
+
+TeensyPrinter::~TeensyPrinter()
+{
+  delete ser;
+}
+
+void TeensyPrinter::update()
+{
+}
+
+void TeensyPrinter::addLine(uint8_t *rowOfBits)
+{
+  static uint8_t linebuf[WIDTH/8]; // output data for one line of pixels
+  
+  // The rowOfBits is a set of *rows* of bits. The printer needs *columns*.
+  // Convert and send as necessary.
+
+  // Send bitmap command, followed by bitmap data, followed by linefeed?
+  //  ser->write(27); // set line spacing
+  //  ser->write('3');
+  //  ser->write((uint8_t)30);
+
+#define DC2 18
+
+  // FIXME: is this 0-6, or 1-7? One of them is empty..
+  // FIXME: also read this off of the print head size/line feed size?
+  for (int yoff=1; yoff<8; yoff++) {
+    memset(linebuf, 0, sizeof(linebuf)); // start clear...
+    for (int i=0; i<(NATIVEWIDTH/8); i++) {
+      uint8_t bv = rowOfBits[yoff*120+i];
+      // Process the 8 bits in this byte
+      for (int xoff=0; xoff<8; xoff++) {
+	// scale X from "actual FX80" coordinates to "real printer" coordinates
+	uint16_t actualX = (uint16_t)(((float)(i*8+xoff) * (float)WIDTH) / (float)NATIVEWIDTH);
+
+	if (bv & (1 << (7-xoff))) { // if it's on in the original
+	  // then turn it on in our copy
+	  uint8_t bitNum = actualX & 0x07;
+	  linebuf[actualX>>3] |= (1<<(7-bitNum));
+	}
+      }
+    }
+
+    // Send this line to the printer
+    ser->write(DC2); // send this line as a bitmap
+    ser->write('*');
+    ser->write(1); // FIXME: height
+    ser->write(48); // FIXME: width, in bytes
+    for (int i=0; i<WIDTH/8; i++) {
+      ser->write(linebuf[i]);
+    }
+  }
+
+  //  ser->write(10); // linefeed @ the end
+}
+
+void TeensyPrinter::moveDownPixels(uint8_t p)
+{
+}

teensy/teensy-printer.h

@@ -0,0 +1,25 @@
+#ifndef __TEENSY_PRINTER_H
+#define __TEENSY_PRINTER_H
+
+#include <stdlib.h>
+#include <SoftwareSerial.h>
+
+#include "physicalprinter.h"
+
+class TeensyPrinter : public PhysicalPrinter {
+ public:
+  TeensyPrinter();
+  virtual ~TeensyPrinter();
+
+  virtual void addLine(uint8_t *rowOfBits); // must be 960 pixels wide (120 bytes)
+
+  virtual void update();
+
+  virtual void moveDownPixels(uint8_t p);
+
+ private:
+  uint16_t ypos;
+  SoftwareSerial *ser;
+};
+
+#endif

util/genrom.pl

@@ -5,12 +5,15 @@ use warnings;
 
 my $romfile = shift || die "Must provide the path to an Apple //e ROM image";
 my $diskrom = shift || die "Must also provide the path to an Apple //e Disk II ROM image";
+my $parallelrom = shift || die "Must also provide the path to an Apple // parallel card ROM image";
 
 validate($romfile, 32768, "an Apple //e ROM image");
 validate($diskrom, 256, "a DiskII ROM image");
+validate($parallelrom, 256, "a parallel card ROM image");
 
 dumpRom($romfile, "apple/applemmu-rom.h", "romData", 32768);
 dumpRom($diskrom, "apple/diskii-rom.h", "romData", 256);
+dumpRom($parallelrom, "apple/parallel-rom.h", "romData", 256);
 exit 0;
 
 sub validate {
@@ -38,7 +41,7 @@ sub dumpRom {
 #endif
 
 static
-    uint8_t romData[32768] PROGMEM = { 
+    uint8_t romData[$datasize] PROGMEM = { 
 EOF
     ;