diff --git a/Makefile b/Makefile
index 04bd1ee..3c9e85b 100644
--- a/Makefile
+++ b/Makefile
@@ -261,9 +261,7 @@ $(GEN)/web_sys.js: $(GEN)/dump_web_opcodes | $(GEN)
 	$< sys >$@
 
 WEB_BOOT =  $(COMMON_PHASE1e) \
-            posix/posix.fs posix/allocation.fs posix/termios.fs \
             $(COMMON_PHASE2) \
-            posix/autoboot.fs \
             common/fini.fs
 $(GEN)/web_boot.js: tools/source_to_string.js $(WEB_BOOT) | $(GEN)
 	$< -web boot $(VERSION) $(REVISION) $(WEB_BOOT) >$@
diff --git a/web/dump_web_opcodes.c b/web/dump_web_opcodes.c
index 206c03f..f68947d 100644
--- a/web/dump_web_opcodes.c
+++ b/web/dump_web_opcodes.c
@@ -105,6 +105,7 @@ int main(int argc, char *argv[]) {
     EMITSYS(DOCREATE_OP);
     EMITSYS(builtins);
     printf("  const OP_DOCREATE = %d;\n", OP_DOCREATE);
+    printf("  const OP_DODOES = %d;\n", OP_DODOES);
     printf("  const OP_DOCOL = %d;\n", OP_DOCOL);
     printf("  const OP_DOVAR = %d;\n", OP_DOVAR);
     printf("  const OP_DOCON = %d;\n", OP_DOCON);
diff --git a/web/fuse_web.js b/web/fuse_web.js
index b210947..94e0230 100755
--- a/web/fuse_web.js
+++ b/web/fuse_web.js
@@ -118,7 +118,10 @@ cases = ReplaceAll(cases, /ADDROF[(]([^)]+)[)]/, 'OP_$1');
 
 cases = ReplaceAll(cases, 'return rp', 'i32[g_sys_rp>>2] = rp | 0; return');
 
-cases = ReplaceAll(cases, 'SSMOD_FUNC', '');
+cases = ReplaceAll(cases, 'SSMOD_FUNC',
+                   'sp = (sp + 4)|0; i32[sp>>2] = tos|0; ' +
+                   'SSMOD(sp|0); tos = i32[sp>>2]|0; sp = (sp - 8)|0');
+
 // Keep Together   vvv
 cases = ReplaceAll(cases, /tos ([^=]?)= /, 'txx $1= ');
 cases = ReplaceAll(cases, ' tos', ' (tos|0)');
diff --git a/web/web.template.js b/web/web.template.js
index c70b036..9b7d42b 100644
--- a/web/web.template.js
+++ b/web/web.template.js
@@ -86,6 +86,11 @@ function TOBODY(xt) {
   return xt + (i32[xt>>2] === OP_DOCREATE || i32[xt>>2] === OP_DODOES ? 2 : 1);
 }
 
+function DOES(ip) {
+  i32[i32[i32[g_sys_current>>2]>>2]>>2] = OP_DODOES;
+  i32[(i32[i32[g_sys_current>>2]>>2] + 4)>>2] = ip;
+}
+
 function BUILTIN_ITEM(i) {
   return i32[g_sys_builtins>>2] + 4 * 3 * i;
 }
@@ -143,6 +148,15 @@ function CCOMMA(value) {
   i32[g_sys_heap>>2]++;
 }
 
+function SSMOD(sp) {
+  var a = i32[(sp - 8)>>2];
+  var b = i32[(sp - 4)>>2];
+  var c = i32[sp>>2];
+  a *= b;
+  i32[(sp - 8)>>2] = a / c;
+  i32[sp>>2] = a % c;
+}
+
 function Finish() {
   if (i32[g_sys_latestxt>>2] && !i32[TOPARAMS(i32[g_sys_latestxt>>2])>>2]) {
     var sz = i32[g_sys_heap>>2] - (g_sys_latestxt + 4);
@@ -518,8 +532,8 @@ var ffi = {
   'log': function(n) { console.log(n); },
   'COMMA': function(n) { COMMA(n); },
   'CCOMMA': function(n) { COMMA(n); },
-  'SSMOD': function() { console.log('ssmod'); },
-  'DOES': function() { console.log('does'); },
+  'SSMOD': function(sp) { SSMOD(sp); },
+  'DOES': function(ip) { DOES(ip); },
   'DOIMMEDIATE': function() { DOIMMEDIATE(); },
   'UNSMUDGE': function() { UNSMUDGE(); },
 };