diff --git a/shell/cell.mu b/shell/cell.mu
index 6ca1fcb3..85596d64 100644
--- a/shell/cell.mu
+++ b/shell/cell.mu
@@ -13,7 +13,7 @@ type cell {
   # type 5: screen
   screen-data: (handle screen)
   # type 6: keyboard
-  keyboard-data: (handle stream byte)
+  keyboard-data: (handle gap-buffer)
   # TODO: array, (associative) table, stream
 }
 
@@ -151,12 +151,21 @@ fn clear-screen-cell _self-ah: (addr handle cell) {
   clear-screen screen
 }
 
-fn allocate-keyboard _out: (addr handle cell), capacity: int {
+fn allocate-keyboard _out: (addr handle cell) {
   var out/eax: (addr handle cell) <- copy _out
   allocate out
   var out-addr/eax: (addr cell) <- lookup *out
-  var dest-ah/ecx: (addr handle stream byte) <- get out-addr, keyboard-data
-  populate-stream dest-ah, capacity
+  var dest-ah/ecx: (addr handle gap-buffer) <- get out-addr, keyboard-data
+  allocate dest-ah
   var type/ecx: (addr int) <- get out-addr, type
   copy-to *type, 6/keyboard
 }
+
+fn new-keyboard _out: (addr handle cell), capacity: int {
+  var out/eax: (addr handle cell) <- copy _out
+  allocate-keyboard out
+  var out-addr/eax: (addr cell) <- lookup *out
+  var dest-ah/eax: (addr handle gap-buffer) <- get out-addr, keyboard-data
+  var dest-addr/eax: (addr gap-buffer) <- lookup *dest-ah
+  initialize-gap-buffer dest-addr, capacity
+}
diff --git a/shell/evaluate.mu b/shell/evaluate.mu
index 2966751e..ba13b494 100644
--- a/shell/evaluate.mu
+++ b/shell/evaluate.mu
@@ -1,7 +1,7 @@
 # env is an alist of ((sym . val) (sym . val) ...)
 # we never modify `in` or `env`
 # ignore 'screen-cell' on a first reading; it's a hack for sandboxes
-fn evaluate _in: (addr handle cell), out: (addr handle cell), env-h: (handle cell), globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell) {
+fn evaluate _in: (addr handle cell), out: (addr handle cell), env-h: (handle cell), globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell), keyboard-cell: (addr handle cell) {
   var in/esi: (addr handle cell) <- copy _in
 #?   dump-cell in
 #?   {
@@ -47,7 +47,7 @@ fn evaluate _in: (addr handle cell), out: (addr handle cell), env-h: (handle cel
   {
     break-if-!=
     trace-text trace, "eval", "symbol"
-    lookup-symbol in-addr, out, env-h, globals, trace, screen-cell
+    lookup-symbol in-addr, out, env-h, globals, trace, screen-cell, keyboard-cell
     trace-higher trace
     return
   }
@@ -121,7 +121,7 @@ fn evaluate _in: (addr handle cell), out: (addr handle cell), env-h: (handle cel
     rest-ah <- get rest, right
     rest <- lookup *rest-ah
     var second-arg-ah/edx: (addr handle cell) <- get rest, left
-    evaluate second-arg-ah, out, env-h, globals, trace, screen-cell
+    evaluate second-arg-ah, out, env-h, globals, trace, screen-cell, keyboard-cell
     trace-text trace, "eval", "saving global binding"
     var first-arg/eax: (addr cell) <- lookup *first-arg-ah
     var first-arg-data-ah/eax: (addr handle stream byte) <- get first-arg, text-data
@@ -158,7 +158,7 @@ fn evaluate _in: (addr handle cell), out: (addr handle cell), env-h: (handle cel
     var first-arg-ah/ecx: (addr handle cell) <- get rest, left
     var guard-h: (handle cell)
     var guard-ah/esi: (addr handle cell) <- address guard-h
-    evaluate first-arg-ah, guard-ah, env-h, globals, trace, screen-cell
+    evaluate first-arg-ah, guard-ah, env-h, globals, trace, screen-cell, keyboard-cell
     rest-ah <- get rest, right
     rest <- lookup *rest-ah
     var branch-ah/edi: (addr handle cell) <- get rest, left
@@ -173,7 +173,7 @@ fn evaluate _in: (addr handle cell), out: (addr handle cell), env-h: (handle cel
       rest <- lookup *rest-ah
       branch-ah <- get rest, left
     }
-    evaluate branch-ah, out, env-h, globals, trace, screen-cell
+    evaluate branch-ah, out, env-h, globals, trace, screen-cell, keyboard-cell
     trace-higher trace
     return
   }
@@ -192,7 +192,7 @@ fn evaluate _in: (addr handle cell), out: (addr handle cell), env-h: (handle cel
     var curr-out/eax: (addr cell) <- lookup *curr-out-ah
     var left-out-ah/edi: (addr handle cell) <- get curr-out, left
     var left-ah/esi: (addr handle cell) <- get curr, left
-    evaluate left-ah, left-out-ah, env-h, globals, trace, screen-cell
+    evaluate left-ah, left-out-ah, env-h, globals, trace, screen-cell, keyboard-cell
     #
     curr-out-ah <- get curr-out, right
     var right-ah/eax: (addr handle cell) <- get curr, right
@@ -205,7 +205,7 @@ fn evaluate _in: (addr handle cell), out: (addr handle cell), env-h: (handle cel
   var args-ah/edx: (addr handle cell) <- get evaluated-list, right
 #?   dump-cell args-ah
 #?   abort "aaa"
-  apply function-ah, args-ah, out, env-h, globals, trace, screen-cell
+  apply function-ah, args-ah, out, env-h, globals, trace, screen-cell, keyboard-cell
   trace-higher trace
   # trace "=> " out {{{
   {
@@ -218,7 +218,7 @@ fn evaluate _in: (addr handle cell), out: (addr handle cell), env-h: (handle cel
   # }}}
 }
 
-fn apply _f-ah: (addr handle cell), args-ah: (addr handle cell), out: (addr handle cell), env-h: (handle cell), globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell) {
+fn apply _f-ah: (addr handle cell), args-ah: (addr handle cell), out: (addr handle cell), env-h: (handle cell), globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell), keyboard-cell: (addr handle cell) {
   var f-ah/eax: (addr handle cell) <- copy _f-ah
   var _f/eax: (addr cell) <- lookup *f-ah
   var f/esi: (addr cell) <- copy _f
@@ -257,14 +257,14 @@ fn apply _f-ah: (addr handle cell), args-ah: (addr handle cell), out: (addr hand
     var rest/eax: (addr cell) <- lookup *rest-ah
     var params-ah/ecx: (addr handle cell) <- get rest, left
     var body-ah/eax: (addr handle cell) <- get rest, right
-    apply-function params-ah, args-ah, body-ah, out, env-h, globals, trace, screen-cell
+    apply-function params-ah, args-ah, body-ah, out, env-h, globals, trace, screen-cell, keyboard-cell
     trace-higher trace
     return
   }
   error trace, "unknown function"
 }
 
-fn apply-function params-ah: (addr handle cell), args-ah: (addr handle cell), _body-ah: (addr handle cell), out: (addr handle cell), env-h: (handle cell), globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell) {
+fn apply-function params-ah: (addr handle cell), args-ah: (addr handle cell), _body-ah: (addr handle cell), out: (addr handle cell), env-h: (handle cell), globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell), keyboard-cell: (addr handle cell) {
   # push bindings for params to env
   var new-env-storage: (handle cell)
   var new-env-ah/esi: (addr handle cell) <- address new-env-storage
@@ -282,7 +282,7 @@ fn apply-function params-ah: (addr handle cell), args-ah: (addr handle cell), _b
     # evaluate each expression, writing result to `out`
     {
       var curr-ah/eax: (addr handle cell) <- get body, left
-      evaluate curr-ah, out, *new-env-ah, globals, trace, screen-cell
+      evaluate curr-ah, out, *new-env-ah, globals, trace, screen-cell, keyboard-cell
     }
     #
     body-ah <- get body, right
@@ -375,7 +375,7 @@ fn push-bindings _params-ah: (addr handle cell), _args-ah: (addr handle cell), o
   trace-higher trace
 }
 
-fn lookup-symbol sym: (addr cell), out: (addr handle cell), env-h: (handle cell), globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell) {
+fn lookup-symbol sym: (addr cell), out: (addr handle cell), env-h: (handle cell), globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell), keyboard-cell: (addr handle cell) {
   # trace sym
   {
     var stream-storage: (stream byte 0x40)
@@ -408,7 +408,7 @@ fn lookup-symbol sym: (addr cell), out: (addr handle cell), env-h: (handle cell)
     var env-nil?/eax: boolean <- nil? env
     compare env-nil?, 0/false
     break-if-=
-    lookup-symbol-in-globals sym, out, globals, trace, screen-cell
+    lookup-symbol-in-globals sym, out, globals, trace, screen-cell, keyboard-cell
     trace-higher trace
     # trace "=> " out " (global)" {{{
     {
@@ -480,7 +480,7 @@ fn lookup-symbol sym: (addr cell), out: (addr handle cell), env-h: (handle cell)
   var env-tail-storage: (handle cell)
   var env-tail-ah/eax: (addr handle cell) <- address env-tail-storage
   cdr env, env-tail-ah, trace
-  lookup-symbol sym, out, *env-tail-ah, globals, trace, screen-cell
+  lookup-symbol sym, out, *env-tail-ah, globals, trace, screen-cell, keyboard-cell
   trace-higher trace
     # trace "=> " out " (recurse)" {{{
     {
@@ -518,7 +518,7 @@ fn test-lookup-symbol-in-env {
   var tmp-ah/edx: (addr handle cell) <- address tmp-storage
   new-symbol tmp-ah, "a"
   var in/eax: (addr cell) <- lookup *tmp-ah
-  lookup-symbol in, tmp-ah, *env-ah, 0/no-globals, 0/no-trace, 0/no-screen
+  lookup-symbol in, tmp-ah, *env-ah, 0/no-globals, 0/no-trace, 0/no-screen, 0/no-keyboard
   var result/eax: (addr cell) <- lookup *tmp-ah
   var result-type/edx: (addr int) <- get result, type
   check-ints-equal *result-type, 1/number, "F - test-lookup-symbol-in-env/0"
@@ -540,7 +540,7 @@ fn test-lookup-symbol-in-globals {
   var tmp-ah/ebx: (addr handle cell) <- address tmp-storage
   new-symbol tmp-ah, "+"
   var in/eax: (addr cell) <- lookup *tmp-ah
-  lookup-symbol in, tmp-ah, *nil-ah, globals, 0/no-trace, 0/no-screen
+  lookup-symbol in, tmp-ah, *nil-ah, globals, 0/no-trace, 0/no-screen, 0/no-keyboard
   var result/eax: (addr cell) <- lookup *tmp-ah
   var result-type/edx: (addr int) <- get result, type
   check-ints-equal *result-type, 4/primitive-function, "F - test-lookup-symbol-in-globals/0"
@@ -755,7 +755,7 @@ fn test-evaluate-is-well-behaved {
   var tmp-storage: (handle cell)
   var tmp-ah/edx: (addr handle cell) <- address tmp-storage
   new-symbol tmp-ah, "a"
-  evaluate tmp-ah, tmp-ah, *env-ah, 0/no-globals, t, 0/no-screen
+  evaluate tmp-ah, tmp-ah, *env-ah, 0/no-globals, t, 0/no-screen, 0/no-keyboard
   # doesn't die
   check-trace-contains t, "error", "unbound symbol: a", "F - test-evaluate-is-well-behaved"
 }
@@ -769,7 +769,7 @@ fn test-evaluate-number {
   var tmp-storage: (handle cell)
   var tmp-ah/edx: (addr handle cell) <- address tmp-storage
   new-integer tmp-ah, 3
-  evaluate tmp-ah, tmp-ah, *env-ah, 0/no-globals, 0/no-trace, 0/no-screen
+  evaluate tmp-ah, tmp-ah, *env-ah, 0/no-globals, 0/no-trace, 0/no-screen, 0/no-keyboard
   #
   var result/eax: (addr cell) <- lookup *tmp-ah
   var result-type/edx: (addr int) <- get result, type
@@ -799,7 +799,7 @@ fn test-evaluate-symbol {
   var tmp-storage: (handle cell)
   var tmp-ah/edx: (addr handle cell) <- address tmp-storage
   new-symbol tmp-ah, "a"
-  evaluate tmp-ah, tmp-ah, *env-ah, 0/no-globals, 0/no-trace, 0/no-screen
+  evaluate tmp-ah, tmp-ah, *env-ah, 0/no-globals, 0/no-trace, 0/no-screen, 0/no-keyboard
   var result/eax: (addr cell) <- lookup *tmp-ah
   var result-type/edx: (addr int) <- get result, type
   check-ints-equal *result-type, 1/number, "F - test-evaluate-symbol/0"
@@ -821,7 +821,7 @@ fn test-evaluate-primitive-function {
   # eval +, nil env
   var tmp-storage: (handle cell)
   var tmp-ah/esi: (addr handle cell) <- address tmp-storage
-  evaluate add-ah, tmp-ah, *nil-ah, globals, 0/no-trace, 0/no-screen
+  evaluate add-ah, tmp-ah, *nil-ah, globals, 0/no-trace, 0/no-screen, 0/no-keyboard
   #
   var result/eax: (addr cell) <- lookup *tmp-ah
   var result-type/edx: (addr int) <- get result, type
@@ -856,7 +856,7 @@ fn test-evaluate-primitive-function-call {
   var globals/edx: (addr global-table) <- address globals-storage
   initialize-globals globals
   #
-  evaluate tmp-ah, tmp-ah, *nil-ah, globals, t, 0/no-screen
+  evaluate tmp-ah, tmp-ah, *nil-ah, globals, t, 0/no-screen, 0/no-keyboard
 #?   dump-trace t
   #
   var result/eax: (addr cell) <- lookup *tmp-ah
diff --git a/shell/global.mu b/shell/global.mu
index 68b584ea..f5d513c5 100644
--- a/shell/global.mu
+++ b/shell/global.mu
@@ -130,7 +130,7 @@ fn append-global _self: (addr global-table), name: (addr array byte), value: (ha
   copy-handle value, curr-value-ah
 }
 
-fn lookup-symbol-in-globals _sym: (addr cell), out: (addr handle cell), _globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell) {
+fn lookup-symbol-in-globals _sym: (addr cell), out: (addr handle cell), _globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell), keyboard-cell: (addr handle cell) {
   var sym/eax: (addr cell) <- copy _sym
   var sym-name-ah/eax: (addr handle stream byte) <- get sym, text-data
   var _sym-name/eax: (addr stream byte) <- lookup *sym-name-ah
@@ -160,6 +160,16 @@ fn lookup-symbol-in-globals _sym: (addr cell), out: (addr handle cell), _globals
     copy-object screen-cell, out
     return
   }
+  # if sym is "keyboard" and keyboard-cell exists, return it
+  {
+    var sym-is-keyboard?/eax: boolean <- stream-data-equal? sym-name, "keyboard"
+    compare sym-is-keyboard?, 0/false
+    break-if-=
+    compare keyboard-cell, 0
+    break-if-=
+    copy-object keyboard-cell, out
+    return
+  }
   # otherwise error "unbound symbol: ", sym
   var stream-storage: (stream byte 0x40)
   var stream/ecx: (addr stream byte) <- address stream-storage
diff --git a/shell/sandbox.mu b/shell/sandbox.mu
index e40f4ab6..c58d49a3 100644
--- a/shell/sandbox.mu
+++ b/shell/sandbox.mu
@@ -5,6 +5,7 @@ type sandbox {
   keyboard-var: (handle cell)
   trace: (handle trace)
   cursor-in-trace?: boolean
+  cursor-in-keyboard?: boolean
 }
 
 fn initialize-sandbox _self: (addr sandbox), screen-and-keyboard?: boolean {
@@ -23,7 +24,7 @@ fn initialize-sandbox _self: (addr sandbox), screen-and-keyboard?: boolean {
     var screen-ah/eax: (addr handle cell) <- get self, screen-var
     new-screen screen-ah, 5/width, 4/height
     var keyboard-ah/eax: (addr handle cell) <- get self, keyboard-var
-    allocate-keyboard keyboard-ah, 5/capacity
+    new-keyboard keyboard-ah, 0x10/keyboard-capacity
   }
   #
   var trace-ah/eax: (addr handle trace) <- get self, trace
@@ -61,6 +62,7 @@ fn render-sandbox screen: (addr screen), _self: (addr sandbox), xmin: int, ymin:
   var x/eax: int <- copy xmin
   var y/ecx: int <- copy ymin
   y <- maybe-render-empty-screen screen, self, xmin, y
+  y <- maybe-render-keyboard screen, self, xmin, y
   var cursor-in-sandbox?/ebx: boolean <- copy 0/false
   {
     var cursor-in-trace?/eax: (addr boolean) <- get self, cursor-in-trace?
@@ -282,6 +284,79 @@ fn render-screen screen: (addr screen), _target-screen: (addr screen), xmin: int
   return screen-y
 }
 
+fn maybe-render-keyboard screen: (addr screen), _self: (addr sandbox), xmin: int, ymin: int -> _/ecx: int {
+  var self/esi: (addr sandbox) <- copy _self
+  var keyboard-obj-cell-ah/eax: (addr handle cell) <- get self, keyboard-var
+  var keyboard-obj-cell/eax: (addr cell) <- lookup *keyboard-obj-cell-ah
+  compare keyboard-obj-cell, 0
+  {
+    break-if-!=
+    return ymin
+  }
+  var keyboard-obj-cell-type/ecx: (addr int) <- get keyboard-obj-cell, type
+  compare *keyboard-obj-cell-type, 6/keyboard
+  {
+    break-if-=
+    return ymin  # silently give up on rendering the keyboard
+  }
+  var keyboard-obj-ah/eax: (addr handle gap-buffer) <- get keyboard-obj-cell, keyboard-data
+  var _keyboard-obj/eax: (addr gap-buffer) <- lookup *keyboard-obj-ah
+  var keyboard-obj/edx: (addr gap-buffer) <- copy _keyboard-obj
+  var x/eax: int <- draw-text-rightward screen, "keyboard: ", xmin, 0x99/xmax, ymin, 7/fg, 0/bg
+  var y/ecx: int <- copy ymin
+  var cursor-in-keyboard?/esi: (addr boolean) <- get self, cursor-in-keyboard?
+  y <- render-keyboard screen, keyboard-obj, x, y, *cursor-in-keyboard?
+  return y
+}
+
+# draw an evocative shape
+fn render-keyboard screen: (addr screen), _keyboard: (addr gap-buffer), xmin: int, ymin: int, render-cursor?: boolean -> _/ecx: int {
+  var keyboard/esi: (addr gap-buffer) <- copy _keyboard
+  var width/edx: int <- copy 0x10/keyboard-capacity
+  var y/edi: int <- copy ymin
+  # top border
+  {
+    set-cursor-position screen, xmin, y
+    move-cursor-right screen
+    var x/ebx: int <- copy 0
+    {
+      compare x, width
+      break-if->=
+      draw-code-point-at-cursor screen, 0x2d/horizontal-bar, 0x18/fg, 0/bg
+      move-cursor-right screen
+      x <- increment
+      loop
+    }
+    y <- increment
+  }
+  # keyboard
+  var x/eax: int <- copy xmin
+  draw-code-point screen, 0x7c/vertical-bar, x, y, 0x18/fg, 0/bg
+  x <- increment
+  x <- render-gap-buffer screen, keyboard, x, y, render-cursor?
+  x <- copy xmin
+  x <- add 1  # for left bar
+  x <- add 0x10/keyboard-capacity
+  draw-code-point screen, 0x7c/vertical-bar, x, y, 0x18/fg, 0/bg
+  y <- increment
+  # bottom border
+  {
+    set-cursor-position screen, xmin, y
+    move-cursor-right screen
+    var x/ebx: int <- copy 0
+    {
+      compare x, width
+      break-if->=
+      draw-code-point-at-cursor screen, 0x2d/horizontal-bar, 0x18/fg, 0/bg
+      move-cursor-right screen
+      x <- increment
+      loop
+    }
+    y <- increment
+  }
+  return y
+}
+
 fn print-screen-cell-of-fake-screen screen: (addr screen), _target: (addr screen), x: int, y: int {
   var target/ecx: (addr screen) <- copy _target
   var data-ah/eax: (addr handle array screen-cell) <- get target, data
@@ -349,7 +424,9 @@ fn edit-sandbox _self: (addr sandbox), key: byte, globals: (addr global-table),
     clear-trace trace
     var screen-cell/eax: (addr handle cell) <- get self, screen-var
     clear-screen-cell screen-cell
-    run data, value, globals, trace, screen-cell
+    var keyboard-cell/esi: (addr handle cell) <- get self, keyboard-var
+    # don't clear
+    run data, value, globals, trace, screen-cell, keyboard-cell
     return
   }
   # tab
@@ -384,7 +461,7 @@ fn edit-sandbox _self: (addr sandbox), key: byte, globals: (addr global-table),
   return
 }
 
-fn run in: (addr gap-buffer), out: (addr stream byte), globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell) {
+fn run in: (addr gap-buffer), out: (addr stream byte), globals: (addr global-table), trace: (addr trace), screen-cell: (addr handle cell), keyboard-cell: (addr handle cell) {
   var read-result-storage: (handle cell)
   var read-result/esi: (addr handle cell) <- address read-result-storage
   read-cell in, read-result, trace
@@ -399,7 +476,7 @@ fn run in: (addr gap-buffer), out: (addr stream byte), globals: (addr global-tab
   allocate-pair nil-ah
   var eval-result-storage: (handle cell)
   var eval-result/edi: (addr handle cell) <- address eval-result-storage
-  evaluate read-result, eval-result, *nil-ah, globals, trace, screen-cell
+  evaluate read-result, eval-result, *nil-ah, globals, trace, screen-cell, keyboard-cell
   var error?/eax: boolean <- has-errors? trace
   {
     compare error?, 0/false
@@ -414,7 +491,7 @@ fn run in: (addr gap-buffer), out: (addr stream byte), globals: (addr global-tab
 fn test-run-integer {
   var sandbox-storage: sandbox
   var sandbox/esi: (addr sandbox) <- address sandbox-storage
-  initialize-sandbox sandbox, 0/no-screen
+  initialize-sandbox sandbox, 0/no-screen-or-keyboard
   # type "1"
   edit-sandbox sandbox, 0x31/1, 0/no-globals, 0/no-screen, 0/no-keyboard, 0/no-disk
   # eval
@@ -433,7 +510,7 @@ fn test-run-integer {
 fn test-run-with-spaces {
   var sandbox-storage: sandbox
   var sandbox/esi: (addr sandbox) <- address sandbox-storage
-  initialize-sandbox sandbox, 0/no-screen
+  initialize-sandbox sandbox, 0/no-screen-or-keyboard
   # type input with whitespace before and after
   edit-sandbox sandbox, 0x20/space, 0/no-globals, 0/no-screen, 0/no-keyboard, 0/no-disk
   edit-sandbox sandbox, 0x31/1, 0/no-globals, 0/no-screen, 0/no-keyboard, 0/no-disk
@@ -456,7 +533,7 @@ fn test-run-with-spaces {
 fn test-run-quote {
   var sandbox-storage: sandbox
   var sandbox/esi: (addr sandbox) <- address sandbox-storage
-  initialize-sandbox sandbox, 0/no-screen
+  initialize-sandbox sandbox, 0/no-screen-or-keyboard
   # type "'a"
   edit-sandbox sandbox, 0x27/quote, 0/no-globals, 0/no-screen, 0/no-keyboard, 0/no-disk
   edit-sandbox sandbox, 0x61/a, 0/no-globals, 0/no-screen, 0/no-keyboard, 0/no-disk
@@ -476,7 +553,7 @@ fn test-run-quote {
 fn test-run-error-invalid-integer {
   var sandbox-storage: sandbox
   var sandbox/esi: (addr sandbox) <- address sandbox-storage
-  initialize-sandbox sandbox, 0/no-screen
+  initialize-sandbox sandbox, 0/no-screen-or-keyboard
   # type "1a"
   edit-sandbox sandbox, 0x31/1, 0/no-globals, 0/no-screen, 0/no-keyboard, 0/no-disk
   edit-sandbox sandbox, 0x61/a, 0/no-globals, 0/no-screen, 0/no-keyboard, 0/no-disk
@@ -496,7 +573,7 @@ fn test-run-error-invalid-integer {
 fn test-run-move-cursor-into-trace {
   var sandbox-storage: sandbox
   var sandbox/esi: (addr sandbox) <- address sandbox-storage
-  initialize-sandbox sandbox, 0/no-screen
+  initialize-sandbox sandbox, 0/no-screen-or-keyboard
   # type "12"
   edit-sandbox sandbox, 0x31/1, 0/no-globals, 0/no-screen, 0/no-keyboard, 0/no-disk
   edit-sandbox sandbox, 0x32/2, 0/no-globals, 0/no-screen, 0/no-keyboard, 0/no-disk