diff --git a/css/ui.css b/css/ui.css
index efe53510..f34a7d5a 100644
--- a/css/ui.css
+++ b/css/ui.css
@@ -403,3 +403,22 @@ div.markdown th {
 .alert {
  z-index:2;
 }
+.segment {
+  border: 2px solid rgba(0,0,0,0.2);
+  border-radius:8px;
+  color: #333;
+  background-color:#999;
+}
+.segment.segment-ram {
+  background-color:#aaffaa;
+}
+.segment.segment-rom {
+  background-color:#ddddff;
+  padding-top:1em;
+  padding-bottom:1em;
+}
+.segment-offset {
+  font-family: "Andale Mono", "Menlo", "Lucida Console", monospace;
+  font-size: 12pt;
+  color:#66dd66;
+}
diff --git a/src/project.ts b/src/project.ts
index f5afba38..9e14c1b1 100644
--- a/src/project.ts
+++ b/src/project.ts
@@ -1,6 +1,6 @@
 "use strict";
 
-import { FileData, Dependency, SourceLine, SourceFile, CodeListing, CodeListingMap, WorkerError, WorkerResult } from "./workertypes";
+import { FileData, Dependency, SourceLine, SourceFile, CodeListing, CodeListingMap, WorkerError, Segment, WorkerResult } from "./workertypes";
 import { getFilenameForPath, getFilenamePrefix, getFolderForPath, isProbablyBinary } from "./util";
 
 type BuildResultCallback = (result:WorkerResult) => void;
@@ -12,6 +12,7 @@ type GetRemoteCallback = any; // TODO (path:string, (text:string) => FileData) =
 export class CodeProject {
   filedata : {[path:string]:FileData} = {};
   listings : CodeListingMap;
+  segments : Segment[];
   mainpath : string;
   pendingWorkerMessages = 0;
   tools_preloaded = {};
@@ -298,6 +299,11 @@ export class CodeProject {
           lst.assemblyfile = new SourceFile(lst.asmlines, lst.text);
       }
     }
+    // save and sort segment list
+    this.segments = data.segments;
+    if (this.segments) {
+      this.segments.sort((a,b) => {return a.start-b.start});
+    }
   }
 
   getListings() : CodeListingMap {
diff --git a/src/ui.ts b/src/ui.ts
index e91df95c..092f095e 100644
--- a/src/ui.ts
+++ b/src/ui.ts
@@ -194,6 +194,11 @@ function refreshWindowList() {
       return new Views.MemoryView();
     });
   }
+  if (current_project.segments) {
+    addWindowItem("#memmap", "Memory Map", function() {
+      return new Views.MemoryMapView();
+    });
+  }
 }
 
 // can pass integer or string id
diff --git a/src/views.ts b/src/views.ts
index 2da0f79b..d18ce55a 100644
--- a/src/views.ts
+++ b/src/views.ts
@@ -3,7 +3,7 @@
 import $ = require("jquery");
 //import CodeMirror = require("codemirror");
 import { CodeProject } from "./project";
-import { SourceFile, WorkerError } from "./workertypes";
+import { SourceFile, WorkerError, Segment } from "./workertypes";
 import { Platform, EmuState } from "./baseplatform";
 import { hex, lpad, rpad } from "./util";
 import { CodeAnalyzer } from "./analysis";
@@ -772,3 +772,54 @@ export class BinaryFileView implements ProjectView {
   
   getPath() { return this.path; }
 }
+
+///
+
+export class MemoryMapView implements ProjectView {
+  maindiv : JQuery;
+
+  createDiv(parent : HTMLElement) {
+    this.maindiv = $("<div>");
+    //div.setAttribute("class", "memdump");
+    $(parent).append(this.maindiv);
+    this.refresh();
+    return this.maindiv[0];
+  }
+  
+  addSegment(seg : Segment) {
+    var offset = $('<div class="col-md-1 segment-offset"/>');
+    offset.text('$'+hex(seg.start,4));
+    var segdiv = $('<div class="col-md-4 segment"/>');
+    if (seg.last)
+      segdiv.text(seg.name+" ("+(seg.last-seg.start)+" / "+seg.size+" bytes used)");
+    else
+      segdiv.text(seg.name+" ("+seg.size+" bytes)");
+    if (seg.size >= 256) {
+      var pad = (Math.log(seg.size) - Math.log(256)) * 0.5;
+      segdiv.css('padding-top', pad+'em');
+      segdiv.css('padding-bottom', pad+'em');
+    }
+    if (seg.type) {
+      segdiv.addClass('segment-'+seg.type);
+    }
+    var row = $('<div class="row"/>').append(offset, segdiv);
+    var container = $('<div class="container"/>').append(row);
+    this.maindiv.append(container);
+  }
+
+  refresh() {
+    this.maindiv.empty();
+    var segments = current_project.segments;
+    if (segments) {
+      var curofs = 0;
+      for (var seg of segments) {
+        var used = seg.last ? (seg.last-seg.start) : seg.size;
+        if (curofs != seg.start)
+          this.addSegment({name:'',start:curofs, size:seg.start-curofs});
+        this.addSegment(seg);
+        curofs = seg.start + used;
+      }
+    }
+  }
+  
+}
diff --git a/src/worker/workermain.ts b/src/worker/workermain.ts
index 9aa17561..9a2c22a3 100644
--- a/src/worker/workermain.ts
+++ b/src/worker/workermain.ts
@@ -886,7 +886,8 @@ function linkLD65(step:BuildStep) {
       }
     }
     // build segment map
-    var segments = {};
+    var segments = [];
+    segments.push({name:'Stack',start:0x100,size:0x100,type:'ram'});
     for (let ident in symbolmap) {
       let m = seg_re.exec(ident);
       if (m) {
@@ -894,8 +895,11 @@ function linkLD65(step:BuildStep) {
         let segstart = symbolmap['__'+seg+'_RUN__'] || symbolmap['__'+seg+'_START__'];
         let segsize = symbolmap['__'+seg+'_SIZE__'];
         let seglast = symbolmap['__'+seg+'_LAST__'];
-        if (segstart >= 0 && segsize > 0) {
-          segments[seg] = {start:segstart, size:segsize, last:seglast};
+        if (segstart >= 0 && segsize > 0 && seg != 'PRG' && seg != 'RAM') { // TODO
+          var type = null;
+          if (seg == 'CODE' || seg == 'STARTUP' || seg == 'RODATA') type = 'rom';
+          else if (seg == 'ZP' || seg == 'RAM' || seg == 'DATA' || seg == 'BSS') type = 'ram';
+          segments.push({name:seg, start:segstart, size:segsize, last:seglast, type:type});
         }
       }
     }
diff --git a/src/workertypes.ts b/src/workertypes.ts
index 4085561a..ea67eef4 100644
--- a/src/workertypes.ts
+++ b/src/workertypes.ts
@@ -91,12 +91,15 @@ export type VerilogOutput =
 
 export type WorkerOutput = Uint8Array | VerilogOutput;
 
+export type Segment = {name:string, start:number, size:number, last?:number, type?:string};
+
 export interface WorkerResult {
   output:WorkerOutput,
   errors:WorkerError[],
   listings:CodeListingMap,
   symbolmap:{[sym:string]:number},
   params:{},
+  segments?:Segment[],
   unchanged?:boolean,
 }