basic serial-out support

CMakeLists.txt

@@ -170,6 +170,7 @@ add_executable(quaesar
     uae_src/scsi.cpp
     uae_src/scsiemul.cpp
     uae_src/scsitape.cpp
+    uae_src/serial.cpp
     uae_src/sndboard.cpp
     uae_src/statusline.cpp
     uae_src/tabletlibrary.cpp

src/dummy.cpp

@@ -1374,42 +1374,25 @@ void scram5394_add_scsi_unit(int, uaedev_config_info*, romconfig*) {
     UNIMPLEMENTED();
 }
 
-uae_u16 SERDATR() {
-    UNIMPLEMENTED();
-    return 0;
-}
-
-void SERDAT(uae_u16) {
-    UNIMPLEMENTED();
-}
-
-void serial_dtr_off() {
-    UNIMPLEMENTED();
-}
-
-void serial_exit() {
-    UNIMPLEMENTED();
+void serial_uartbreak(int) {
+    // UNIMPLEMENTED();
 }
 
 void serial_hsynchandler() {
-    UNIMPLEMENTED();
-}
-
-void serial_init() {
-    UNIMPLEMENTED();
+    // UNIMPLEMENTED();
 }
 
 void serial_rbf_clear() {
     UNIMPLEMENTED();
 }
 
-uae_u8 serial_readstatus(uae_u8, uae_u8) {
-    UNIMPLEMENTED();
-    return 0;
+uae_u8 serial_readstatus(uae_u8 v, uae_u8) {
+    // UNIMPLEMENTED();
+    return v;
 }
 
 void serial_rethink() {
-    UNIMPLEMENTED();
+    serial_flush_buffer();
 }
 
 void setup_brkhandler() {
@@ -1893,19 +1876,6 @@ uae_u8* save_cdtv(size_t*, uae_u8*) {
     return nullptr;
 }
 
-void serial_uartbreak(int) {
-    UNIMPLEMENTED();
-}
-
-uae_u8 serial_writestatus(uae_u8, uae_u8) {
-    UNIMPLEMENTED();
-    return 0;
-}
-
-void SERPER(unsigned short) {
-    UNIMPLEMENTED();
-}
-
 int set_cache_state(int) {
     UNIMPLEMENTED();
     return 0;

src/gfx.cpp

@@ -16,7 +16,6 @@ int vsync_activeheight, vsync_totalheight;
 int max_uae_width = 8192, max_uae_height = 8192;
 int saveimageoriginalpath;
 float vsync_vblank, vsync_hblank;
-uae_u16 serper, serdat, serdatr;
 
 // related to GSYNC/VSYNC
 int target_get_display_scanline2(int displayindex) {

src/parse_options.h

@@ -7,6 +7,8 @@ struct Options {
     std::string input;
     // kickstart file such as kick.rom, kick31.rom, etc.
     std::string kickstart;
+    // serial port path ('/tmp/virtual-serial-port')
+    std::string serial_port;
 };
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

src/quaesar.cpp

@@ -45,6 +45,7 @@ int main(int argc, char** argv) {
 
     app.add_option("input", options.input, "Executable or image file (adf, dms)")->check(CLI::ExistingFile);
     app.add_option("-k,--kickstart", options.kickstart, "Path to the kickstart ROM")->check(CLI::ExistingFile);
+    app.add_option("--serial_port", options.serial_port, "Serial port path");
     CLI11_PARSE(app, argc, argv);
 
     keyboard_settrans();
@@ -61,6 +62,12 @@ int main(int argc, char** argv) {
         }
     }
 
+    if (!options.serial_port.empty())
+    {
+        currprefs.use_serial = 1;
+        strcpy(currprefs.sername, options.serial_port.c_str());
+    }
+
     // Most compatible mode
     currprefs.cpu_cycle_exact = 1;
     currprefs.cpu_memory_cycle_exact = 1;

src/sysconfig.h

@@ -67,7 +67,7 @@
 // #define D3D /* D3D display filter support */
 #define PARALLEL_PORT   /* parallel port emulation */
 #define PARALLEL_DIRECT /* direct parallel port emulation */
-// #define SERIAL_PORT /* serial port emulation */
+#define SERIAL_PORT /* serial port emulation */
 #define SERIAL_ENET /* serial port UDP transport */
 // #define SCSIEMU /* uaescsi.device emulation */
 // #define UAESERIAL /* uaeserial.device emulation */

uae_src/serial.cpp

@@ -11,7 +11,7 @@
 #include "sysconfig.h"
 #include "sysdeps.h"
 
-#include "config.h"
+// #include "config.h"
 #include "options.h"
 #include "uae.h"
 #include "memory.h"
@@ -204,7 +204,7 @@ void SERDAT (uae_u16 w)
 uae_u16 SERDATR (void)
 {
 	if (!currprefs.use_serial)
-		return 0;
+		return 0x3000;
 #if SERIALDEBUG > 2
 	write_log ("SERDATR: read 0x%04x\n", serdat);
 #endif