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DEVICE ZXSPECTRUM128
include "../_sdk/sys_h.asm"
org PROGSTART
cmd_begin
ld sp,0x4000
ld e,3 ;6912
OS_SETGFX ;e=0:EGA, e=2:MC, e=3:6912, e=6:text ;+SET FOCUS ;e=-1: disable gfx (out: e=old gfxmode)
YIELD ;set palette
OS_GETMAINPAGES
ld (reset_hook_place+5),de
ld (reset_hook_place+7),hl
;OS_GETSCREENPAGES
;de=pages of screen 0 (d=higher page), hl=pages of screen 1 (h=higher page)
ld a,(user_scr0_low) ;ok
ld (cmdpgscreen0_0),a
hobetarunner=0x4100
OS_GETCONFIG
ld d,l
ld a,l
cp 1
jr nz,no_eva
OS_SETSYSDRV
ld sp,0x0000
ld hl,nmisvc_starter
ld de,0x0080
ld bc,nmisvc_starter_size
ldir
ld de,str_nmisvc
OS_OPENHANDLE
jp nmisvc_start
nmisvc_starter
disp 0x0080
str_nmisvc
defb "/bin/nmisvc.com",0
nmisvc_start
push bc
ld de,0x0100
ld hl,0xc000
OS_READHANDLE
pop bc
OS_CLOSEHANDLE
jp PROGSTART
ent
nmisvc_starter_size=$-nmisvc_starter
no_eva
ld (pcconf),a
ld c,0xff
cp 2
jr z,atm_1f
cp 3
jr nz,not_atm_1f
atm_1f
ld c,0x7f
ld d,0
not_atm_1f
ld (reset_hook_place+3),de
ld a,0x1f^0xff
and c
SETPGC000
ld hl,reset_hook_place
ld de,0xc000
ld bc,reset_hook_end - reset_hook_begin
ldir
ld hl,0xaa55
ld (0xfffe),hl
xor a
ld (0xfffd),a
ld hl,0xc000
ld e,a
hook_crc_loop
add a,(hl)
adc a,e
inc hl
bit 7,h
jr nz,hook_crc_loop
neg
ld (0xfffd),a
di
cmdpgscreen0_0=$+1
ld a,0xff-1
SETPG32KLOW
inc a ;ld a,0xff-0
SETPG32KHIGH
ld a,(cmdpgscreen0_0)
sub 4-1 ;ld a,0xff-4 ;pgkillable
SETPG16K
ld hl,washobetarunner
ld de,hobetarunner
ld bc,hobetarunner_sz
ldir
jp hobetarunner
washobetarunner
disp hobetarunner ;in pgkillable
di
ld a,0x7f-5
ld bc,0xbff7
out (c),a
ld a,0x7f-4
ld bc,0xfff7
out (c),a
ld hl,0xc000
ld de,0x8000
ld bc,0x4000
ldir ;pg4 -> pg5
ld a,0x7f-8;pgtrdosfs
ld bc,0xfff7
out (c),a
ld hl,0x1c00+0xc000
ld de,0x1c00+0x8000
ld bc,0x400
ldir ;restore sysvars
ld a,0x7f-2
ld bc,0xbff7
out (c),a
ld a,0x7f-1
ld bc,0xfff7
out (c),a
ld hl,0xc000
ld de,0x8000
ld bc,0x4000
ldir ;pg1 -> pg2
ld a,0x7f-0+0x80
ld bc,0xfff7
out (c),a
ld a,0x00
ld bc,0x7ffd
out (c),a
ld a,0x01 ;128 basic (with 7ffd)
ld bc,0x3ff7
out (c),a
ld a,0x7f-5
ld bc,0x7ff7
out (c),a
;128: pages 128/DOS,5,2,0(7ffd)
ld a,0x10
ld bc,0x7ffd
out (c),a
;48: pages 2,4,4,4
ld a,0x7f-5
ld bc,0x7ff7
out (c),a
ld a,0x7f-2
ld bc,0xbff7
out (c),a
ld a,0x7f-0+0x80
ld bc,0xfff7
out (c),a
ld a,0x83 ;48 basic switchable to DOS
ld bc,0x3ff7
out (c),a
;48: pages 48/DOS,5,2,0(7ffd)
LD A,%10100011 ;6912
ld bc,0xff77 ;shadow ports off, palette off
out (c),a
ld sp,0x6000
ld bc,0xeff7
ld a,0x10
out (c),a
ld a,0x10
ld bc,0x7ffd
out (c),a ;for 128 basic (проверено, работает, 48 тоже работает)
pcconf=$ - hobetarunner + washobetarunner + 1
ld a,1
cp 2
jr z,set_xbios
cp 3
jr nz,not_set_xbios
set_xbios
ld a,(0x3CBC)
cp 0x87
call z,0x3C9E ;переключить в vtrdos
not_set_xbios
ld a,0
ld bc,0x7ffd
out (c),a ;for 128 basic (проверено, работает, 48 тоже работает)
ld a,7
out (0xfe),a
ld hl,0
push hl
ei
hobetarunner_jp=$+1
jp 0 ;0x3d2f ;0;0x6000
;АТМный перехватчик ресета
ent
hobetarunner_sz=$-washobetarunner
reset_hook_place
disp 0xc000
reset_hook_begin
jp reset_hook_start
defs 10
reset_hook_start
di
xor a
ld (reset_hook_begin),a
ld hl,reset_hook_begin
ld de,0x8000
ld bc,reset_hook_end - reset_hook_begin
ldir
jp $ + 3 - 0x4000
ld a,0x57
ld bc,0x7ffd
out (c),a
ld de,(0x8003)
ld iy,0x3f7f
ld ix,0xbfff
dec d
inc d
jr z,rest_atm2
ld iy,0x3777
ld ix,0xb7f7
rest_atm2
ld a,0x7f
ld bc,0x3FF7
out (c),a
ld b,iyh
out (c),e
ld e,0x7b
ld b,0x7f
out (c),e
ld b,0xff
out (c),e
ld e,0x47
ld bc,0x7ffd
out (c),e
ld hl,(0x8005)
ld bc,0x3FF7
out (c),a
ld b,iyh
out (c),h
ld b,0x7F
out (c),a
ld b,iyl
out (c),l
ld hl,(0x8007)
ld b,0xfF
out (c),a
ld b,ixl
out (c),l
ld bc,0xbd77
ld a,0xae
out (c),a
ld sp,0x4000
im 1
ei
jp 0x0000
reset_hook_end
ent
nop
cmd_end
display "Size ",/d,cmd_end-cmd_begin," bytes"
savebin "reset.com",cmd_begin,cmd_end-cmd_begin
;LABELSLIST "../us/user.l"