implementation of mmio 1024..2047

assets/disk0/tvdos/bin/command.js

@@ -9,7 +9,6 @@ let DEBUG_PRINT = true;
 
 let errorlevel = 0;
 
-
 const termWidth = con.getmaxyx()[1];
 const termHeight = con.getmaxyx()[0];
 const welcome_text = (termWidth > 40) ? "TSVM Disk Operating System, version " + _TVDOS.VERSION
@@ -17,6 +16,14 @@ const welcome_text = (termWidth > 40) ? "TSVM Disk Operating System, version " +
 const greetLeftPad = (termWidth - welcome_text.length - 6) >> 1;
 const greetRightPad = termWidth - greetLeftPad - welcome_text.length - 6;
 
+function makeHash() {
+	let e = "YBNDRFG8EJKMCPQXOTLVWIS2A345H769";
+	let m = e.length;
+	return e[Math.floor(Math.random()*m)] + e[Math.floor(Math.random()*m)] + e[Math.floor(Math.random()*m)] + e[Math.floor(Math.random()*m)] + e[Math.floor(Math.random()*m)]
+}
+
+const shellID = makeHash();
+
 function print_prompt_text() {
     if (goFancy) {
         con.color_pair(239,161);
@@ -59,6 +66,12 @@ function greet() {
         println(welcome_text);
 }
 
+function sendLcdMsg(s) {
+    for (let i = 1024; i < 1048; i++) {
+        sys.poke(-i-1, (s === undefined) ? 0 : s.charCodeAt(i - 1024)|0);
+    }
+}
+
 function trimStartRevSlash(s) {
     var cnt = 0;
     while (cnt < s.length) {
@@ -362,7 +375,18 @@ shell.execute = function(line) {
                 });
             }
             else {
-                return execApp(programCode, tokens)|0; // return value of undefined will cast into 0
+                if (_G.shellProgramTitles === undefined) _G.shellProgramTitles = [];
+                _G.shellProgramTitles.push(cmd.toUpperCase())
+                sendLcdMsg(_G.shellProgramTitles[_G.shellProgramTitles.length - 1]);
+                serial.println(_G.shellProgramTitles);
+
+                let ret = execApp(programCode, tokens)|0; // return value of undefined will cast into 0
+
+                _G.shellProgramTitles.pop();
+                sendLcdMsg(_G.shellProgramTitles[_G.shellProgramTitles.length - 1]);
+                serial.println(_G.shellProgramTitles);
+
+                return ret;
             }
         }
     }
@@ -370,7 +394,6 @@ shell.execute = function(line) {
 Object.freeze(shell);
 _G.shell = shell;
 
-
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
 if (exec_args[1] !== undefined) {

src/net/torvald/tsvm/peripheral/CharacterLCDdisplay.kt

@@ -41,6 +41,7 @@ class CharacterLCDdisplay(vm: VM) : GraphicsAdapter(vm, AdapterConfig(
         val batPerc = "89"
         val batVolt = "5.1"
         val batText = "  $batPerc% ${batVolt}V"
+        val msg = (1024L until 1048L).map { vm.getIO().mmio_read(it)!!.toInt().and(255) }
         vm.poke(-69,2)
         val time_t = currentTimeInMills()
         val min = (time_t / 60000) % 60
@@ -58,6 +59,10 @@ class CharacterLCDdisplay(vm: VM) : GraphicsAdapter(vm, AdapterConfig(
                 val ccode = clock[x].toInt()
                 batch.draw(lcdFont.get(ccode % 16, ccode / 16), xoff+74 + x * lcdFont.tileW, y)
             }
+            for (x in msg.indices) {
+                val ccode = msg[x]
+                batch.draw(lcdFont.get(ccode % 16, ccode / 16), xoff+74 + (x + 6) * lcdFont.tileW, y)
+            }
             for (x in batText.indices) {
                 val ccode = batText[x].toInt()
                 batch.draw(lcdFont.get(ccode % 16, ccode / 16), xoff+74 + (config.textCols - batText.length + x) * lcdFont.tileW, y)

src/net/torvald/tsvm/peripheral/IOSpace.kt

@@ -37,6 +37,8 @@ class IOSpace(val vm: VM) : PeriBase, InputProcessor {
     )
     /*private*/ val blockTransferPorts = Array(4) { BlockTransferPort(vm, it) }
 
+    private val peripheralFast = UnsafeHelper.allocate(1024)
+
     private val keyEventBuffers = ByteArray(8)
 
     init {
@@ -45,6 +47,8 @@ class IOSpace(val vm: VM) : PeriBase, InputProcessor {
         //blockTransferPorts[0].attachDevice(TestDiskDrive(vm, 0, File("assets/disk0")))
 
         // for testers: use EmulInstance
+
+        peripheralFast.fillWith(0)
     }
 
     private fun composeBlockTransferStatus(portno: Int): Int {
@@ -99,6 +103,8 @@ class IOSpace(val vm: VM) : PeriBase, InputProcessor {
 
             88L -> vm.romMapping.toByte()
 
+            in 1024..2047 -> peripheralFast[addr - 1024]
+
             4076L -> blockTransferPorts[0].statusCode.toByte()
             4077L -> blockTransferPorts[1].statusCode.toByte()
             4078L -> blockTransferPorts[2].statusCode.toByte()
@@ -157,6 +163,8 @@ class IOSpace(val vm: VM) : PeriBase, InputProcessor {
 
             88L -> vm.romMapping = bi
 
+            in 1024..2047 -> peripheralFast[addr - 1024] = byte
+
             4076L -> blockTransferPorts[0].statusCode = bi
             4077L -> blockTransferPorts[1].statusCode = bi
             4078L -> blockTransferPorts[2].statusCode = bi
@@ -203,6 +211,7 @@ class IOSpace(val vm: VM) : PeriBase, InputProcessor {
     override fun dispose() {
         blockTransferRx.forEach { it.destroy() }
         blockTransferTx.forEach { it.destroy() }
+        peripheralFast.destroy()
     }
 
     private var mouseX: Short = 0