+XBOX = $94 ; Draw a box
+XABOX = $95
+XFILL = $96
+XCHAR = $97 ; Display a char on the screen in Hires
+XSCHAR = $98 ; Draw a string in hires
+XEXPLO = $9C ; Send Explode sound to PSG
+XPING = $9D ; Send Ping sound to PSG
+
+; ---------------------------------------------------------------------------
+; ROM entries variables
+
+PWD_PTR = $00
+
+; ---------------------------------------------------------------------------
+;
+BUFTRV := $100
+
+
+; ---------------------------------------------------------------------------
+; Page $200
+BNKST := $200 ; Used to store signature of 8 bank (length : 8 bytes)
+TABDRV := $208
+
+DRVDEF := $20C
+FLGTEL := $20D
+KOROM := $20E ; Used to compute the size of all rom bank. The result is store here. The value is in KB
+KORAM := $20F ; Used to compute the size of all ram bank. The result is store here. The value is in KB
+; Time management
+TIMED := $210
+TIMES := $211
+TIMEM := $212
+TIMEH := $213
+FLGCLK := $214
+FLGCLK_FLAG := $215
+FLGCUR := $216 ; Cursor management flag
+; screens position managements
+
+FLGCUR_STATE := $217 ; Cursor state flag
+
+ADSCRL := $218
+ADSCRH := $21C
+SCRX := $220
+SCRY := $224
+
+SCRDX := $228
+SCRFX := $22C
+SCRDY := $230
+SCRFY := $234
+SCRBAL := $238
+SCRBAH := $23C
+SCRCT := $240
+SCRCF := $244
+FLGSCR := $248
+CURSCR := $24C
+
+HARD_COPY_HIRES := $250 ; Hard copy vector
+
+SCRTXT := $256
+SCRHIR := $25C
+SCRTRA := $262 ; 6 bytes lenfth
+
+; Keyboard management
+KBDCOL := $268 ; 8 bytes length
+KBDFLG_KEY := $270 ; 0 if no key pressed
+KBDVRR := $272
+
+KBDVRL := $273
+FLGKBD := $275
+KBDFCT := $276
+KBDSHT := $278
+
+KBDKEY := $279
+KBDCTC := $27E
+LPRX := $286
+LPRY := $287
+LPRFX := $288
+LPRFY := $289
+FLGLPR := $28A
+
+; Joysticks management
+FLGJCK := $28C
+JCGVAL := $28D
+JCDVAL := $28E
+JCKTAB := $29D
+
+
+HRSPAT := $2AA ; Hires pattern : it's used to draw pattern for a line or a circle
+HRSERR := $2AB
+
+IOTAB0 := $2AE
+IOTAB1 := $2B2
+IOTAB2 := $2B6
+IOTAB3 := $2BA
+ADIOB := $2BE ; 48 bytes length
+FLGRST := $2EE
+CSRND := $2EF
+VNMI := $2F4
+ADIODB_VECTOR := $2f7 ; 3 bytes length
+
+IRQVECTOR := $2FA
+VAPLIC := $2FD
+
+; ---------------------------------------------------------------------------
+; Page $400
+EXBNK := $40C
+VEXBNK := $414
+BNKCIB := $417