diff --git a/interp/errors.go b/interp/errors.go
index 30007de8..4f0e4f2c 100644
--- a/interp/errors.go
+++ b/interp/errors.go
@@ -11,19 +11,17 @@ import (
 	"tinygo.org/x/go-llvm"
 )
 
-var errLiteralToPointer = errors.New("interp: trying to convert literal value to pointer")
-
 // These errors are expected during normal execution and can be recovered from
 // by running the affected function at runtime instead of compile time.
 var (
-	errExpectedPointer        = errors.New("interp: trying to use an integer as a pointer (memory-mapped I/O?)")
+	errIntegerAsPointer       = errors.New("interp: trying to use an integer as a pointer (memory-mapped I/O?)")
 	errUnsupportedInst        = errors.New("interp: unsupported instruction")
 	errUnsupportedRuntimeInst = errors.New("interp: unsupported instruction (to be emitted at runtime)")
 	errMapAlreadyCreated      = errors.New("interp: map already created")
 )
 
 func isRecoverableError(err error) bool {
-	return err == errExpectedPointer || err == errUnsupportedInst || err == errUnsupportedRuntimeInst || err == errMapAlreadyCreated
+	return err == errIntegerAsPointer || err == errUnsupportedInst || err == errUnsupportedRuntimeInst || err == errMapAlreadyCreated
 }
 
 // ErrorLine is one line in a traceback. The position may be missing.
diff --git a/interp/interp.go b/interp/interp.go
index 38001a06..e6d3be88 100644
--- a/interp/interp.go
+++ b/interp/interp.go
@@ -102,7 +102,7 @@ func Run(mod llvm.Module, debug bool) error {
 		if callErr != nil {
 			if isRecoverableError(callErr.Err) {
 				if r.debug {
-					fmt.Fprintln(os.Stderr, "not interpretring", r.pkgName, "because of error:", callErr.Err)
+					fmt.Fprintln(os.Stderr, "not interpreting", r.pkgName, "because of error:", callErr.Error())
 				}
 				mem.revert()
 				continue
diff --git a/interp/interpreter.go b/interp/interpreter.go
index 36a845d7..d5e36215 100644
--- a/interp/interpreter.go
+++ b/interp/interpreter.go
@@ -550,7 +550,22 @@ func (r *runner) run(fn *function, params []value, parentMem *memoryView, indent
 			}
 			ptr, err := operands[0].asPointer(r)
 			if err != nil {
-				return nil, mem, r.errorAt(inst, err)
+				if err != errIntegerAsPointer {
+					return nil, mem, r.errorAt(inst, err)
+				}
+				// GEP on fixed pointer value (for example, memory-mapped I/O).
+				ptrValue := operands[0].Uint() + offset
+				switch operands[0].len(r) {
+				case 8:
+					locals[inst.localIndex] = literalValue{uint64(ptrValue)}
+				case 4:
+					locals[inst.localIndex] = literalValue{uint32(ptrValue)}
+				case 2:
+					locals[inst.localIndex] = literalValue{uint16(ptrValue)}
+				default:
+					panic("pointer operand is not of a known pointer size")
+				}
+				continue
 			}
 			ptr = ptr.addOffset(uint32(offset))
 			locals[inst.localIndex] = ptr
diff --git a/interp/memory.go b/interp/memory.go
index 589c0c6f..4c66b537 100644
--- a/interp/memory.go
+++ b/interp/memory.go
@@ -348,7 +348,7 @@ func (v literalValue) clone() value {
 }
 
 func (v literalValue) asPointer(r *runner) (pointerValue, error) {
-	return pointerValue{}, errLiteralToPointer
+	return pointerValue{}, errIntegerAsPointer
 }
 
 func (v literalValue) asRawValue(r *runner) rawValue {
@@ -949,7 +949,7 @@ func (v rawValue) clone() value {
 func (v rawValue) asPointer(r *runner) (pointerValue, error) {
 	if v.buf[0] <= 255 {
 		// Probably a null pointer or memory-mapped I/O.
-		return pointerValue{}, errExpectedPointer
+		return pointerValue{}, errIntegerAsPointer
 	}
 	return pointerValue{v.buf[0]}, nil
 }