it hangs because your interrupts are prolly still running #38

hang on there, it's not all that e.z. indeed geheh.

Quote:

Quote: why not do something like: di a,(a8) ;get primslot settings and #fc ;keep pages 1-3 ld b,a ld a,(f343) ;get RAM primslot and #03 ;keep page 0 or b out (a8),a ;write primslot again ei fast and furious. changed the a,(a8) to in a,($a8) and the out (a8),a to out ($a8),a If i type this code at the beginning of $c000 it immediately hangs when i run it... It was allmost getting clear to me what was going on, but now Im very confused again haha

it is important you grasp the whole idea.
the A8 port is where primslots are to be set/read.

.

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Im allmost convinced that this code is incorrect: ;set page 0 to RAM ld a,(#F341) or ld a,(#F343) ; get RAM primslot for page 0 ld h,0 (indicates page 0 to be set) call #24 ; change slot because when I use ld a,%00 00 11 00 it seems to work..... ???

What SHOULD A be in my case?

Quote:

When I type "page" in Wbass2 I get this: Page Slot Mem 0.......0.... 3..... 1.......3-2..5..... 2.......3.2..4..... 3.......3.2..0.....

Quote:

;page2 to mapper 6 ld a,6 out ($fe),a ;make a copy of page 0 (ROM) to page 2 (RAM) ld hl,0 ;start ld de,$8000 ;destiny ld bc,$4000 ;lenght ldir ;copy block ;page0 to mapper 6 NOW PAGE 0 contains the copied Bios which was in page 0 initially ld a,6 ld ($fc),a

doesnt this make sure that page0 is in memmap 6, and contains the BIOS info, which was in a different memmap before?
And if so; doesnt this mean that after changing the ROM (page 0) to RAM, the data in this page is still the same (because it readsout memmap 6)???

Quote:

putting BIOS in RAM is hell

I seem to feel a bit misplaced....
Being in hell.....
thats comforting

Quote:

Quote: Im allmost convinced that this code is incorrect: ;set page 0 to RAM ld a,(#F341) or ld a,(#F343) ; get RAM primslot for page 0 ld h,0 (indicates page 0 to be set) call #24 ; change slot because when I use ld a,%00 00 11 00 it seems to work..... ??? What SHOULD A be in my case? Quote: When I type "page" in Wbass2 I get this: Page Slot Mem 0.......0.... 3..... 1.......3-2..5..... 2.......3.2..4..... 3.......3.2..0.....

A should be 3, your primairy slot nr.

page 1,3,2,5 for example means: page 1 containts PRIM slot 3 (#a8) and SEC slot 2 (#FFFF) set at mapper nr 5

Quote:

Quote: ;page2 to mapper 6 ld a,6 out ($fe),a ;make a copy of page 0 (ROM) to page 2 (RAM) ld hl,0 ;start ld de,$8000 ;destiny ld bc,$4000 ;lenght ldir ;copy block ;page0 to mapper 6 NOW PAGE 0 contains the copied Bios which was in page 0 initially ld a,6 ld ($fc),a doesnt this make sure that page0 is in memmap 6, and contains the BIOS info, which was in a different memmap before? And if so; doesnt this mean that after changing the ROM (page 0) to RAM, the data in this page is still the same (because it readsout memmap 6)???

yes, I rec'n

let's see:
page 0: ROM
page 2: RAM
set map 6 @ page 2
copy ROM to RAM
set map 6 @ page 0
page 0: RAM

this should work indeed.

Quote:

because when I use ld a,%00 00 11 00 it seems to work..... ???

let's do a small rewrite of that value in binary:

E xxx SS PP
0 000 11 00

E = expanded slot flag. when this flag is set the SS part is valid (slot 0-3), otherwise it's only the PP part... (slot 0)

in this case, just unexpanded slot 0... which is where the BIOS is actually located.

Quote:

let's see: page 0: ROM page 2: RAM set map 6 @ page 2 copy ROM to RAM set map 6 @ page 0 page 0: RAM this should work indeed.

except for the fact that this only changes page 0's mapper, and doesnt change its ROM to RAM

it does.. the last "pseudo" instruction

followed by a crash...

Quote:

followed by a crash...

hmmm, I dont get it....
why the crash....
If it DOES change page 0's ROM to RAM,
then why does it crash??

set map 6 @ page 2
copy ROM to RAM
set map 6 @ page 0

doesnt this make sure, that all the content of page 0's ROM is copied to Mapper 6?
And if so, after switching page 0 to Mapper 6........ the initial content of page 0's Bios should be there right??

confusing

won't the BIOS ISR just switch itself back? (or the first subrom call for that matter)

I'm out of ideas....
Anyone?