Changes
X-MEM
,== Technical ==
ROMs are selected using the normal ROM selection I/O port (DFxx).
* If 'free' is active, the CPC will also see 16 KB pages from the X-MEM flash at &40-&4f . All are always visible regardless of the ROM lock booting from CPC or X-MEM. ROM boot switches. If you wish to program select &47 contains the flash use the &40-&4f rangealternate lower ROM.
* When "boot from CPC" is activatedactive, rom 0 and OS and BASIC are from CPC and not paged in by the from X-MEM but they can still be accessed at &40 etc-&4f if free is set.
* If you wish to program the flash make sure 'free' is set and use the rom slots in the &40-&4f range. * The flash is mapped contiguously to roms 0&40-15 &4f so that when programming the flash you need to translate the flash address from the documentation datasheet to an appropriate rom slot and address in the range &c000-&ffff.
e.g. for flash address &05555 use DF41 and address &D555. For &2aaa this is DF40 and address &EAAA.
* If 'rom read' is not set, roms are not visible at all and flash can't be accessed.
== X-MEM Floppy Disc Utilities ==
This program allows to install the X-MEM after the Init pass. Also, it can up- date the Firmware and BASIC, targeting your CPC and keyboard layout. RUN”INSTALL”
The process takes few seconds for reprogramming the Lower ROM and ROM
0. Then you will be able to choose the CPC target model for programming the X-MEM. Notethat Note that ROM 1 willbeusedinthefuturetoextendthe will be used in the future to extend the Firmware 3.14. Currently, a 448K RAM Drive“C”is Drive “C” is installed. Use |C from BASIC or C: from CP/M.
=== X-MEM Rescue Pass ===
==== 3. Burning ROMs ====
There are different ways to flash a ROM:* Using Firmware 3.15: You can program the ROM from BASIC into the X-MEM: CALL &B8DD,<source>,<rom_id>
i.e. “CALL &B8DD,&4000,15” set the ROM 15 with 16K loaded at &4000.
* Using FutureOS: Use the convenient [[ROManager]] to manage all your ROMs.
=== FutureOS Lower ROM ===
A4: Try to boot with the ESC key pressed, then apply the X-MEM rescue pass.
[[Category:Memory expansions]][[Category:Expansion ROM]]
[[Category:FutureOS]]
[[Category:Peripherals]]
Website: [http://centpourcent.net centpourcent.net]