diff --git a/README.md b/README.md
index 5287acf..d0c6c6f 100644
--- a/README.md
+++ b/README.md
@@ -1,17 +1,23 @@
 # Anti-M
 
-Boot ROM-limited games on any Apple II.
+Boot any Apple II disk on any Apple II
 
 ## What is this?
 
 Many early Apple II games only worked on the original Apple II or Apple ][+.
 They refuse to boot on later models, often displaying an "M" error code. This
-was due to overly aggressive copy protection; late in the boot process, there is
-code that checksums the ROM and reboots if it's not recognized. The games
+was due to overly aggressive copy protection; late in the boot process, there
+is code that checksums the ROM and reboots if it's not recognized. The games
 themselves would work fine if they were allowed to boot past this ROM check.
 
-Anti-M is a pre-booter that controls the games' bootloader long enough to bypass
-the ROM check, allowing you to play these games on any Apple II.
+Other games fail on an enhanced Apple //e, due to subtle differences between
+6502 and 65c02 processors. Still others fail on an Apple //c or IIgs, due to
+changes in the boot PROM code. Then there are some _very_ early games that
+require a 13-sector drive.
+
+Anti-M uses a modified boot PROM that can boot any disk, then controls the
+game's bootloader long enough to bypass the ROM check and patch any 6502-
+specific opcodes. The result: you can boot any Apple II disk on any Apple II.
 
 ## How do I use it?
 
@@ -29,6 +35,7 @@ then press `<RETURN>`. The game should boot normally.
 - Frogger (On-Line Systems) (*)
 - Gamma Goblins (Sirius)
 - Genetic Drift (Broderbund)
+- Hard Hat Mack (Electronic Arts) (*)
 - High Orbit (Gebelli)
 - Horizon V (Gebelli)
 - Jawbreaker ][ (On-Line Systems)
@@ -52,6 +59,7 @@ then press `<RETURN>`. The game should boot normally.
 - Star Thief (Cavalier)
 - Trick Shot (IDSI)
 - Zenith (Gebelli)
+- all 13-sector disks (e.g. Epyx, Edu-Ware, many others)
 
 (*) later re-released with different copy protection. Only the first release
 requires Anti-M.
@@ -59,16 +67,32 @@ requires Anti-M.
 ## Does Anti-M patch my original disk?
 
 No! All patches are done in memory only. If you reboot your original disk
-(without running Anti-M), it will fail as usual, because the ROM check is still
-there.
+(without running Anti-M), it will fail as usual, because the ROM check or other
+incompatible code is still there.
 
 ## Can I use Anti-M from a hard drive?
 
-Yes! Copy the `ANTI.M.SYSTEM` file to anywhere on your ProDOS hard drive and run
-it with your favorite launcher.
+Yes! Copy the `ANTI.M.SYSTEM` file to anywhere on your ProDOS hard drive and
+run it with your favorite launcher. Bonus feature: when launching Anti-M from
+a hard drive, it will skip the prompt and immediately boot slot 6, drive 1.
 
 ## History
 
+v1.1 - 2019-03-16
+
+- support booting 13-sector disks
+- support booting disks on Apple //c and IIgs which would otherwise time out
+  looking for a boot sector (SpiraDisc, some early EA games)
+- bypass a peripheral scan in some games that would hang on some peripherals
+  and crash others and require a hardware power cycle in order to reboot
+  properly (SpiraDisc)
+- support multiple versions of "David's Midnight Magic"
+- remove "unsupported game" error, always continue booting
+- bypass prompt if launched from hard drive (press the open- or closed-apple
+  key on startup to show the prompt)
+- minimum requirements lowered to 48K Apple ][+ (still useful for booting
+  13-sector disks)
+
 v1.0 - 2019-03-11
 
 - initial release
diff --git a/src/anti-m.a b/src/anti-m.a
index de88dff..407f8bf 100644
--- a/src/anti-m.a
+++ b/src/anti-m.a
@@ -183,7 +183,7 @@ StringTable
          !word @mainmenu
 
 @header
-         !text "Anti-M v1.1-dev by 4am        2019-03-14"
+         !text "Anti-M v1.1 by 4am            2019-03-16"
          !text "________________________________________",$8D
          !text $8D,$8D,$8D,$8D,$8D,$8D,$8D,$8D,$00
 @mainmenu