sprawa z pamięcią "Extended" w pocketdos (v 1.09.1) najwyraźniej jest
bardziej zagmatwana, stosuję wtyczki CPU/FPU i rozszerzam ją bezproblemowo a jednak gierka dalej wyświetla mi komunikat
"you mast have at least 1024k of expanded memory" :/
.........chodzi o gierę "master of orion" echch, na oficjalnym forum pocketdos wyczytałem że komuś tam udało się odpalić tą gre, opis to jednak czarna magia dla mnie hkmmm, może ktoś ma jakieś dośwadczenie w tym temacie ?
oto co wyczytałem, mocno skomplikowane i w dodatku zahacza o dosbox emulator którego nie czaję...niestety
"1) Master of Orion and Master of Magic is working fine !
For use with DOSBOX or BOCHS plug-in, you need install a correct LIM EMS emulator. Many of this emulators and simulators (EMM386.EXE of MS-DOS or PC-DOS) don't work (because PocketDOS LIM EMS 3.2 driver always present in a conventional memory. and EMM386 incorrectly interpret PocketDOS BIOS A20 memory line for normal emulate and work with DOS INT67h..). Other EMM's (free-dos or caldera's EMM386) work, but have several bug's. This drivers understand A20 line and correct emulate Expanded memory from Extended Memory (with more than 64 handles and right page frame address) but this drivers fail with many errors, and not full compatible with PocketDOS. Only EMM286.EXE driver work's fast and work's fine, but he is incompatible with PocketDOS UMB driver
I'm find compatible driver UMB_EMS.SYS (with UMB_DRV.SYS) to work with PocketDOS. UMB_EMS must be load to high memory. Main page frame of EMS driver-emulator must be higher C400 and lower EBFF. I disable shadowing for A000-C3FF and disable shadowing BIOS-devices range (FE00 and higher), and i/m use chipset-trend UMB_DRV utility. This utility must be load first in CONFIG.SYS, then you must add DOS=high(low), and then add device=himem.sys, the add other devices (UMB_EMM too)
A MoM and MoO games still full playable, but slowest.
2) For use master of Magic and Master of Orion WITHOUT any plug-ins, you need install LIN EMS emulator, which emulate Expanded memory from free HDD space. I try for use Turbo EMS-emulator and configure it for 64 handles (minimum value!) and 170 pages. Master of Magic and Master of Orion is a playable, but they are always swapping to/from HDD, then main speed of the games is slower
I'm try dump main memory and look and disassemble emsmem.sys. This is not a normal EMS driver. PocketDOS EMS driver always present in memory. EMSMEM.SYS is a group of residents, which control irq and i/o for DOS-programs.
Real EMS driver of PocketDOS have 3.2 version of LIM EMS spec. and have maximum 6 handles and have bad page frame segment address /EC00/
My favorite games work slow with nice PocketDOS program
For comfort game you must be try DOSBOX for PPC.
..and we are waiting next release of PocketDOS! In this release PocketDOS developers upgrade LIM EMS driver from 3.2 to 4.0! May be he is allow control ours to change page frame address and number of handles for right use."
pozdro