performance improvements

CMakeLists.txt

@@ -4,8 +4,11 @@ add_application(ssheven CREATOR "SSH7" ssheven.c ssheven-console.c ssheven.r)
 
 set_target_properties(ssheven PROPERTIES COMPILE_OPTIONS -ffunction-sections)
 
+add_compile_options(-O2)
+
 IF(CMAKE_SYSTEM_NAME MATCHES Retro68)
 # for 68k
+add_compile_options(-march=68020)
 set_target_properties(ssheven PROPERTIES LINK_FLAGS "-Wl,-gc-sections -Wl,--mac-segments -Wl,${CMAKE_CURRENT_SOURCE_DIR}/ssheven.segmap")
 target_link_libraries(ssheven ssh2 mbedtls mbedx509 mbedcrypto OpenTransportApp OpenTransport OpenTptInet)
 ELSE()

README.md

@@ -12,8 +12,8 @@ Project status: as of 0.1.0 (see github releases), an actual SSH client, with a
 
 system requirements
 -------------------
-* CPU: minimum m68k processor TBD, any PPC processor should be fast enough
-* RAM: requires around 1MB, exact value TBD (adjust up via the info box if it crashes)
+* CPU: at least a 68020, which may still be too slow.  Any PPC processor should be fast enough!
+* RAM: requires approx 2MB (adjust up via the info box if it crashes)
 * Disk space: currently about 1MB for the fat binary, or about 600KB for one platform
 * System 7.5 recommended, earlier System 7 versions possible with the Thread Manager extension installed
 * Open Transport networking required, version 1.1.1 recommended minimum

ssheven.c

@@ -193,7 +193,7 @@ void event_loop(void)
 
 	// maximum length of time to sleep (in ticks)
 	// GetCaretTime gets the number of ticks between caret on/off time
-	long int sleep_time = GetCaretTime();
+	long int sleep_time = GetCaretTime() / 4;
 
 	do
 	{