diff --git a/README.md b/README.md
index c6b2417..9ae0d75 100644
--- a/README.md
+++ b/README.md
@@ -2,17 +2,21 @@
 
 This software is for use with my super simple flash cartridge (no gals, only 3 74xx elements and some caps and resistors). Top side is that without elements.
 
-The cartridge is driven by addresses D500-D580; write to D500 sets the first bank - this is boot bank. Write to D501 sets second bank etc. The max usable number with cart on is set by write to D51F; write to D580 switches off the cartridge.
+The cartridge is driven by addresses D500-D580; write to D500 sets the first bank - this is default boot bank. Write to D501 sets second bank etc. The max usable number with cart on is set by write to D51F; write to D580 switches off the cartridge.
 
-The internal construction of JatariCart allows utilise max 256kB of flash memory (32 banks)
+The internal construction of JatariCart allows utilise max 256kB of flash memory (32 banks) or of course PROM/EPROM memory.
+The memory package is plcc32.
 
-Remember to fool the Operating System not to hang up by cart on/off, by:
+Flash memory can be programmed/flashed from Atari platform by flasher application, wchich you can find in "flashwriteexample" catalog.
+The flasher must be (for now) preassembled using mads assembler with proper rom file included bank by bank (the flasher source does it by itself).
+
+If you want to write your own cartridge access, remember to fool the Operating System not to hang up by cart on/off, by:
 
 <pre>
 carton (x - bank to switch) 
         pha 
 	sei
-        sta $D580,x
+        sta $D500,x
         sta wsync ; needed for ntsc, no big difference in speed 
         sta wsync ; needed for ntsc 
         lda trig3 
@@ -22,12 +26,15 @@ carton (x - bank to switch)
         rts  
 </pre>
 
+after each access. This will let the system think as cartridge never was switched/removed/inserted. Of course it is better (much better, obligue) that there is no display list, video memory and no interrupts in the area a000-bfff, which can be anything when bank swapping.
+
+Files and descriptions:
 
 flashwritelib.asx - 6502 code library for formatting flash/formatting sector and write byte.
 
 flashsrite.asx - 6502 code for generate flasher (when compiled, it contains either flash routines and cartridge image itself)
 
-crc16_v2.asm - crc16 library for fast checking every sector (when flash is damaged, it happens that write sector damages another)
+crc16_v2.asm - crc16 library for fast checking every sector (when flash is damaged, sometimes it happens that write sector damages another)
 
 Compile (mads needed, http://mads.atari8.info):