2013-06-11 07:08:15 +00:00
|
|
|
/*
|
|
|
|
* Apple // emulator for Linux:
|
|
|
|
* Functions for memory-access indirection table.
|
|
|
|
*
|
|
|
|
* Copyright 1994 Alexander Jean-Claude Bottema
|
|
|
|
* Copyright 1995 Stephen Lee
|
|
|
|
* Copyright 1997, 1998 Aaron Culliney
|
|
|
|
* Copyright 1998, 1999, 2000 Michael Deutschmann
|
|
|
|
*
|
|
|
|
* This software package is subject to the GNU General Public License
|
|
|
|
* version 2 or later (your choice) as published by the Free Software
|
|
|
|
* Foundation.
|
|
|
|
*
|
|
|
|
* THERE ARE NO WARRANTIES WHATSOEVER.
|
|
|
|
*
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "apple2.h"
|
|
|
|
#include "cpu.h"
|
|
|
|
#include "misc.h"
|
|
|
|
|
|
|
|
/* --------------------------------------------------------------------
|
|
|
|
....................................................................
|
|
|
|
Apple ][+ Memory documentation (//e differs mostly in softswitches)
|
|
|
|
|
|
|
|
I use two jump tables; one for get_memory and one for set_memory
|
|
|
|
respectively. The jump tables contain exactly 64k entries to
|
|
|
|
avoid unnecessary range checking. Furthermore, special access
|
|
|
|
or to serve memory mapped I/O services are easily obtained by
|
|
|
|
patching the jump table with various routines.
|
|
|
|
|
|
|
|
Apple 64k address space:
|
|
|
|
|
|
|
|
(Two byte addresses are represented with least significant
|
|
|
|
byte first, e.g. address FA59 is represented as 59 FA)
|
|
|
|
|
|
|
|
Address Description
|
|
|
|
|
|
|
|
0000 - 00FF Zero page RAM
|
|
|
|
0100 - 01FF Stack
|
|
|
|
0200 - 03EF RAM
|
|
|
|
03F0 - 03F1 Address for BRK instruction
|
|
|
|
(normally 59 FA = FA59)
|
|
|
|
03F2 - 03F3 Soft entry vector (normally BF 9D = 9DBF)
|
|
|
|
03F4 Power-up byte
|
|
|
|
03F5 - 03F7 Jump instruction to the subroutine which
|
|
|
|
handles Applesoft II &-commands
|
|
|
|
(normally 4C 58 FF = JMP FF58)
|
|
|
|
03F8 - 03FA Jump instruction to the subroutine which
|
|
|
|
handles User CTRL-Y commands
|
|
|
|
(normally 4C 65 FF = JMP FF65)
|
|
|
|
03FB - 03FD Jump instruction to the subroutine which
|
|
|
|
handles Non-Maskable Interrupts (NMI)
|
|
|
|
(normally 4C 65 FF = JMP FF65)
|
|
|
|
03FE - 03FF Address of the subroutine which handles
|
|
|
|
Interrupt ReQuests (IRQ)
|
|
|
|
(normally 65 FF = FF65)
|
|
|
|
0400 - 07FF Basically primary video text page
|
|
|
|
0478 - 047F I/O Scratchpad RAM Addresses for Slot 0 - 7
|
|
|
|
04F8 - 04FF - " " -
|
|
|
|
0578 - 057F - " " -
|
|
|
|
05F8 - 05FF - " " -
|
|
|
|
0678 - 067F - " " -
|
|
|
|
06F8 - 06FF - " " -
|
|
|
|
0778 - 077F - " " -
|
|
|
|
07F8 - 07FF - " " -
|
|
|
|
----- These two addresses are pretty strange; the values
|
|
|
|
provided were inconsistent at least on my Apple II
|
|
|
|
05F8 Holds the slot number of the disk
|
|
|
|
controller card from which DOS was
|
|
|
|
booted.
|
|
|
|
07F8 Holds the slot number (CX, X = Slot #)
|
|
|
|
of the slot that is currently active.
|
|
|
|
|
|
|
|
0800 - 0BFF Basically secondary video text page
|
|
|
|
|
|
|
|
0C00 - 1FFF Plain RAM
|
|
|
|
2000 - 3FFF Primary video hires page (RAM)
|
|
|
|
4000 - 5FFF Secondary video Hi-Res page (RAM)
|
|
|
|
6000 - BFFF Plain RAM
|
|
|
|
(Normally the operating system is
|
|
|
|
loaded into ~= 9C00 - BFFF)
|
|
|
|
C000 - C00F Keyboard data
|
|
|
|
(C00X contains the character ASCII
|
|
|
|
code of the pressed key. The
|
|
|
|
value is available at any C00X
|
|
|
|
address)
|
|
|
|
C010 - C01F Clear Keyboard strobe
|
|
|
|
C020 - C02F Cassette output toggle
|
|
|
|
C030 - C03F Speaker toggle
|
|
|
|
C040 - C04F Utility strobe
|
|
|
|
C050 Set graphics mode
|
|
|
|
C051 Set text mode
|
|
|
|
C052 Set all text or graphics
|
|
|
|
C053 Mix text and graphics
|
|
|
|
C054 Display primary page
|
|
|
|
C055 Display secondary page
|
|
|
|
C056 Display low-res graphics
|
|
|
|
C057 Display hi-res graphics
|
|
|
|
C058 - C05F Annunciator outputs
|
|
|
|
C060 Cassette input
|
|
|
|
C061 - C063 Pushbutton inputs (button 1, 2 and 3)
|
|
|
|
C064 - C067 Game controller inputs
|
|
|
|
C068 - C06F Same as C060 - C067
|
|
|
|
C070 - C07F Game controller strobe
|
|
|
|
C080 - C08F Slot 0 I/O space (usually a language card)
|
|
|
|
--- If language card
|
|
|
|
C080 Reset language card
|
|
|
|
Read mode enabled
|
|
|
|
Write mode disabled
|
|
|
|
Read from language card
|
|
|
|
Write to ROM (impossible of course)
|
|
|
|
C081 --- First access
|
|
|
|
Read mode disabled
|
|
|
|
Read from ROM
|
|
|
|
--- On second access
|
|
|
|
Write mode enabled
|
|
|
|
Write to language card
|
|
|
|
C082 --- (Disable language card)
|
|
|
|
Read mode disabled
|
|
|
|
Write mode disabled
|
|
|
|
Read from ROM
|
|
|
|
Write to ROM
|
|
|
|
C083 --- First access
|
|
|
|
Read mode enabled
|
|
|
|
Read from language card
|
|
|
|
--- On second access
|
|
|
|
Write mode enabled
|
|
|
|
Write to language card
|
|
|
|
C088 - C08B Same as C080 - C083, but
|
|
|
|
switch to second bank, i.e.
|
|
|
|
map addresses D000-DFFF to
|
|
|
|
other 4k area.
|
|
|
|
C100 - C1FF Slot 1 PROM
|
|
|
|
C200 - C2FF Slot 2 PROM
|
|
|
|
C300 - C3FF Slot 3 PROM
|
|
|
|
C400 - C4FF Slot 4 PROM
|
|
|
|
C500 - C5FF Slot 5 PROM
|
|
|
|
C600 - C6FF Slot 6 PROM
|
|
|
|
C700 - C7FF Slot 7 PROM
|
|
|
|
C800 - CFFF Expansion ROM (for peripheral cards)
|
|
|
|
CFFF Disable access to expansion ROM for
|
|
|
|
ALL peripheral cards.
|
|
|
|
D000 - DFFF ROM or 4k RAM if language card is
|
|
|
|
enabled. However, there are TWO 4k
|
|
|
|
banks that can be mapped onto addresses
|
|
|
|
D000 - DFFF. See C088 - C08B.
|
|
|
|
E000 - FFFF ROM or 8k RAM if language card is
|
|
|
|
enabled.
|
|
|
|
----------------------------------------------------------------- */
|
|
|
|
|
|
|
|
/* ram_nop, read_ram_default, write_ram_default: default ram/rom
|
|
|
|
read/write functions. */
|
|
|
|
E(ram_nop)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_unmapped_softswitch)
|
|
|
|
movb SN(apple_ii_64k)(,EffectiveAddr_E,1), %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(write_unmapped_softswitch)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_keyboard)
|
|
|
|
movb SN(apple_ii_64k)+0xC000, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_keyboard_strobe)
|
|
|
|
andb $0x7f, SN(apple_ii_64k)+0xC000
|
|
|
|
andb $0x7f, SN(apple_ii_64k)+0x1C000
|
|
|
|
movb SN(apple_ii_64k)+0xC000, %al /* HACK: necessary? */
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_random)
|
2013-09-15 16:07:36 +00:00
|
|
|
pushal
|
2013-06-11 07:08:15 +00:00
|
|
|
call SN(c_read_random)
|
2013-09-15 16:07:36 +00:00
|
|
|
popal
|
2013-06-11 07:08:15 +00:00
|
|
|
movb SN(random_value), %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_speaker_toggle_pc)
|
2013-10-06 06:22:08 +00:00
|
|
|
pushal
|
|
|
|
call SN(SpkrToggle)
|
|
|
|
popal // FIXME, do we need to set %al to something here?
|
2013-06-11 07:08:15 +00:00
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_switch_primary_page)
|
|
|
|
testl $SS_PAGE2, SN(softswitches)
|
|
|
|
jnz _read_switch_primary
|
|
|
|
ret
|
|
|
|
_read_switch_primary:
|
|
|
|
andl $~(SS_PAGE2|SS_SCREEN), SN(softswitches)
|
|
|
|
pushal
|
|
|
|
pushl $0
|
|
|
|
call SN(video_setpage)
|
|
|
|
addl $4, %esp
|
|
|
|
popal
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_switch_secondary_page)
|
|
|
|
testl $SS_PAGE2, SN(softswitches)
|
|
|
|
jz _read_switch_secondary
|
|
|
|
ret
|
|
|
|
_read_switch_secondary:
|
|
|
|
orl $(SS_PAGE2|SS_SCREEN), SN(softswitches)
|
|
|
|
pushal
|
|
|
|
pushl $1
|
|
|
|
call SN(video_setpage)
|
|
|
|
addl $4, %esp
|
|
|
|
popal
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* PAGE2 off. if 80STORE on then we use main text page1, and if HIRES
|
|
|
|
on we also use main hires page1, regardless of RAMRD and
|
|
|
|
RAMWRT. */
|
|
|
|
E(iie_page2_off)
|
|
|
|
testl $SS_PAGE2, SN(softswitches) # already off?
|
|
|
|
jz ram_nop
|
|
|
|
andl $~(SS_PAGE2|SS_SCREEN), SN(softswitches)
|
|
|
|
testl $SS_80STORE, SN(softswitches)
|
|
|
|
jz _iie_page2_off_hires_off # no 80STORE
|
|
|
|
andl $~(SS_TEXTRD|SS_TEXTWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_textrd)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_textwrt)
|
|
|
|
testl $SS_HIRES, SN(softswitches)
|
|
|
|
jz _iie_page2_off_hires_off # no HIRES
|
|
|
|
andl $~(SS_HGRRD|SS_HGRWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrrd)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrwrt)
|
|
|
|
_iie_page2_off_hires_off:
|
|
|
|
pushal
|
|
|
|
pushl $0 # page 1 main
|
|
|
|
call SN(video_setpage)
|
|
|
|
addl $4, %esp
|
|
|
|
popal
|
|
|
|
/* call SN(video_redraw)# redraw */
|
|
|
|
ret
|
|
|
|
|
|
|
|
|
|
|
|
/* PAGE2 on. if 80STORE on then we use aux text page 1, and if HIRES
|
|
|
|
on we also use aux hires page 1, regardless of RAMRD and
|
|
|
|
RAMWRT. */
|
|
|
|
E(iie_page2_on)
|
|
|
|
testl $SS_PAGE2, SN(softswitches) # already on?
|
|
|
|
jnz ram_nop
|
|
|
|
orl $SS_PAGE2, SN(softswitches)
|
|
|
|
testl $SS_80STORE, SN(softswitches)
|
|
|
|
jz _iie_page2_on_80store_off # no 80STORE
|
|
|
|
orl $(SS_TEXTRD|SS_TEXTWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_textrd)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_textwrt)
|
|
|
|
testl $(SS_HIRES), SN(softswitches)
|
|
|
|
jz _iie_page2_on_cont
|
|
|
|
orl $(SS_HGRRD|SS_HGRWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrrd)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrwrt)
|
|
|
|
_iie_page2_on_cont:
|
|
|
|
ret
|
|
|
|
|
|
|
|
_iie_page2_on_80store_off: # no 80STORE
|
|
|
|
orl $SS_SCREEN, SN(softswitches)
|
|
|
|
pushal
|
|
|
|
pushl $1 # page 2 main
|
|
|
|
call SN(video_setpage)
|
|
|
|
addl $4, %esp
|
|
|
|
popal
|
|
|
|
/* call SN(video_redraw)# redraw */
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_switch_graphics)
|
|
|
|
testl $SS_TEXT, SN(softswitches)
|
|
|
|
jz ram_nop
|
|
|
|
andl $~SS_TEXT, SN(softswitches)
|
|
|
|
call SN(video_redraw)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_switch_text)
|
|
|
|
testl $SS_TEXT, SN(softswitches)
|
|
|
|
jnz ram_nop
|
|
|
|
orl $SS_TEXT, SN(softswitches)
|
|
|
|
call SN(video_redraw)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_switch_no_mixed)
|
|
|
|
testl $SS_MIXED, SN(softswitches)
|
|
|
|
jz ram_nop
|
|
|
|
andl $~SS_MIXED, SN(softswitches)
|
|
|
|
call SN(video_redraw)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_switch_mixed)
|
|
|
|
testl $SS_MIXED, SN(softswitches)
|
|
|
|
jnz ram_nop
|
|
|
|
orl $SS_MIXED, SN(softswitches)
|
|
|
|
call SN(video_redraw)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_switch_lores)
|
|
|
|
testl $SS_HIRES, SN(softswitches)
|
|
|
|
jz ram_nop
|
|
|
|
andl $~SS_HIRES, SN(softswitches)
|
|
|
|
call SN(video_redraw)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_switch_hires)
|
|
|
|
testl $SS_HIRES, SN(softswitches)
|
|
|
|
jnz ram_nop
|
|
|
|
orl $SS_HIRES, SN(softswitches)
|
|
|
|
call SN(video_redraw)
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* HIRES off. use RAMRD/RAMWRT offsets for hires page 1. */
|
|
|
|
E(iie_hires_off)
|
|
|
|
testl $SS_HIRES, SN(softswitches) # already off?
|
|
|
|
jz ram_nop
|
|
|
|
andl $~(SS_HIRES|SS_HGRRD|SS_HGRWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrrd)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrwrt)
|
|
|
|
testl $SS_RAMRD,SN(softswitches)
|
|
|
|
jz iie_hires_off_no_ramrd
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrrd)
|
|
|
|
orl $SS_HGRRD, SN(softswitches)
|
|
|
|
iie_hires_off_no_ramrd:
|
|
|
|
testl $SS_RAMWRT,SN(softswitches)
|
|
|
|
jz iie_hires_off_no_ramwrt
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrwrt)
|
|
|
|
orl $SS_HGRWRT, SN(softswitches)
|
|
|
|
iie_hires_off_no_ramwrt:
|
|
|
|
call SN(video_redraw) # update screen
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* HIRES on. if 80STORE on, use PAGE2 offset for hires page 1. */
|
|
|
|
E(iie_hires_on)
|
|
|
|
testl $SS_HIRES, SN(softswitches) # already on?
|
|
|
|
jnz ram_nop
|
|
|
|
orl $SS_HIRES, SN(softswitches) # hires on
|
|
|
|
testl $SS_80STORE, SN(softswitches)
|
|
|
|
jz iie_hires_on_80store_off # no 80STORE
|
|
|
|
testl $SS_PAGE2, SN(softswitches)
|
|
|
|
jz iie_hires_on_80store_aux
|
|
|
|
andl $~(SS_HGRRD|SS_HGRWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrrd)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrwrt)
|
|
|
|
jmp iie_hires_on_80store_off
|
|
|
|
iie_hires_on_80store_aux:
|
|
|
|
orl $(SS_HGRRD|SS_HGRWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrrd)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrwrt)
|
|
|
|
iie_hires_on_80store_off:
|
|
|
|
call SN(video_redraw) # update screen
|
|
|
|
ret
|
|
|
|
|
|
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
E(read_button0)
|
|
|
|
movb SN(joy_button0), %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_button1)
|
|
|
|
movb SN(joy_button1), %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(read_button2)
|
|
|
|
movb SN(joy_button2), %al
|
|
|
|
ret
|
|
|
|
|
2013-12-09 00:57:02 +00:00
|
|
|
/* NOTE : Game Controller axis 2 & 3 is not hooked up on a normal //e */
|
2013-06-11 07:08:15 +00:00
|
|
|
E(iie_read_gc2)
|
2013-12-09 00:57:02 +00:00
|
|
|
movb $0, %al
|
2013-06-11 07:08:15 +00:00
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_read_gc3)
|
2013-12-09 00:57:02 +00:00
|
|
|
movb $0, %al
|
2013-06-11 07:08:15 +00:00
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_c080)
|
|
|
|
testl $SS_ALTZP, SN(softswitches)
|
|
|
|
jz lc_c080
|
|
|
|
pushl $lc_to_auxmem /* sneak this code in when
|
|
|
|
* ][+ routine exits */
|
|
|
|
|
|
|
|
/* c080: read RAM; no write; use $D000 bank 2. */
|
|
|
|
E(lc_c080)
|
|
|
|
orl $SS_LCRAM|SS_BANK2, SN(softswitches)
|
|
|
|
andl $~(SS_LCSEC|SS_LCWRT), SN(softswitches)
|
|
|
|
movl $SN(language_banks)-0xD000, SN(base_d000_rd)
|
|
|
|
movl $SN(language_card)-0xE000, SN(base_e000_rd)
|
|
|
|
movl $0, SN(base_d000_wrt)
|
|
|
|
movl $0, SN(base_e000_wrt)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_c081)
|
|
|
|
testl $SS_ALTZP, SN(softswitches)
|
|
|
|
jz lc_c081
|
|
|
|
pushl $lc_to_auxmem /* sneak this code in when
|
|
|
|
* ][+ routine exits */
|
|
|
|
|
|
|
|
/* c081: read ROM; write RAM; use $D000 bank 2. */
|
|
|
|
E(lc_c081)
|
|
|
|
testl $SS_LCSEC, SN(softswitches)
|
|
|
|
je lc_c081_exit
|
|
|
|
orl $SS_LCWRT, SN(softswitches)
|
|
|
|
movl $SN(language_banks)-0xD000, SN(base_d000_wrt)
|
|
|
|
movl $SN(language_card)-0xE000, SN(base_e000_wrt)
|
|
|
|
lc_c081_exit:
|
|
|
|
andl $~SS_LCRAM, SN(softswitches)
|
|
|
|
orl $SS_LCSEC|SS_BANK2, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_d000_rd)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_e000_rd)
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* There is no iie_c082 --- since the LC is offline, no auxillary memory
|
|
|
|
* could be exposed. (ditto for c08a) */
|
|
|
|
|
|
|
|
/* c082: read ROM; no write; use $D000 bank 2. */
|
|
|
|
E(lc_c082)
|
|
|
|
andl $~(SS_LCRAM|SS_LCWRT|SS_LCSEC), SN(softswitches)
|
|
|
|
orl $SS_BANK2, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_d000_rd)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_e000_rd)
|
|
|
|
movl $0, SN(base_d000_wrt)
|
|
|
|
movl $0, SN(base_e000_wrt)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_c083)
|
|
|
|
testl $SS_ALTZP, SN(softswitches)
|
|
|
|
jz lc_c083
|
|
|
|
pushl $lc_to_auxmem /* sneak this code in when
|
|
|
|
* ][+ routine exits */
|
|
|
|
|
|
|
|
/* c083: read and write RAM; no write; use $D000 bank 2. */
|
|
|
|
E(lc_c083) testl $SS_LCSEC, SN(softswitches)
|
|
|
|
je lc_c083_exit
|
|
|
|
orl $SS_LCWRT, SN(softswitches)
|
|
|
|
movl $SN(language_banks)-0xD000, SN(base_d000_wrt)
|
|
|
|
movl $SN(language_card)-0xE000, SN(base_e000_wrt)
|
|
|
|
lc_c083_exit:
|
|
|
|
orl $(SS_LCSEC|SS_LCRAM|SS_BANK2), SN(softswitches)
|
|
|
|
movl $SN(language_banks)-0xD000, SN(base_d000_rd)
|
|
|
|
movl $SN(language_card)-0xE000, SN(base_e000_rd)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_c088)
|
|
|
|
testl $SS_ALTZP, SN(softswitches)
|
|
|
|
jz lc_c088
|
|
|
|
pushl $lc_to_auxmem /* sneak this code in when
|
|
|
|
* ][+ routine exits */
|
|
|
|
|
|
|
|
/* c088: read RAM; no write; use $D000 bank 1. */
|
|
|
|
E(lc_c088)
|
|
|
|
orl $(SS_LCRAM), SN(softswitches)
|
|
|
|
andl $~(SS_LCWRT|SS_LCSEC|SS_BANK2), SN(softswitches)
|
|
|
|
movl $SN(language_banks)-0xC000, SN(base_d000_rd)
|
|
|
|
movl $SN(language_card)-0xE000, SN(base_e000_rd)
|
|
|
|
movl $0, SN(base_d000_wrt)
|
|
|
|
movl $0, SN(base_e000_wrt)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_c089)
|
|
|
|
testl $SS_ALTZP, SN(softswitches)
|
|
|
|
jz lc_c089
|
|
|
|
pushl $lc_to_auxmem /* sneak this code in when
|
|
|
|
* ][+ routine exits */
|
|
|
|
|
|
|
|
/* c089: read ROM; write RAM; use $D000 bank 1. */
|
|
|
|
E(lc_c089)
|
|
|
|
testl $SS_LCSEC, SN(softswitches)
|
|
|
|
jz lc_c089_exit
|
|
|
|
orl $SS_LCWRT, SN(softswitches)
|
|
|
|
movl $SN(language_banks)-0xC000, SN(base_d000_wrt)
|
|
|
|
movl $SN(language_card)-0xE000, SN(base_e000_wrt)
|
|
|
|
lc_c089_exit:
|
|
|
|
andl $~(SS_LCRAM|SS_BANK2), SN(softswitches)
|
|
|
|
orl $(SS_LCSEC), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_d000_rd)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_e000_rd)
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* there is no iie_c08a */
|
|
|
|
|
|
|
|
/* c08a: read ROM; no write; use $D000 bank 1. */
|
|
|
|
E(lc_c08a)
|
|
|
|
andl $~(SS_LCRAM|SS_LCWRT|SS_LCSEC|SS_BANK2), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_d000_rd)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_e000_rd)
|
|
|
|
movl $0, SN(base_d000_wrt)
|
|
|
|
movl $0, SN(base_e000_wrt)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_c08b)
|
|
|
|
testl $SS_ALTZP, SN(softswitches)
|
|
|
|
jz lc_c08b
|
|
|
|
pushl $lc_to_auxmem /* sneak this code in when
|
|
|
|
* ][+ routine exits */
|
|
|
|
|
|
|
|
/* c08b: read and write RAM; use $D000 bank 1. */
|
|
|
|
E(lc_c08b)
|
|
|
|
testl $SS_LCSEC, SN(softswitches)
|
|
|
|
jz lc_c08b_exit
|
|
|
|
orl $SS_LCWRT, SN(softswitches)
|
|
|
|
movl $SN(language_banks)-0xC000, SN(base_d000_wrt)
|
|
|
|
movl $SN(language_card)-0xE000, SN(base_e000_wrt)
|
|
|
|
lc_c08b_exit:
|
|
|
|
orl $(SS_LCRAM|SS_LCSEC), SN(softswitches)
|
|
|
|
andl $~SS_BANK2,SN(softswitches)
|
|
|
|
movl $SN(language_banks)-0xC000, SN(base_d000_rd)
|
|
|
|
movl $SN(language_card)-0xE000, SN(base_e000_rd)
|
|
|
|
ret
|
|
|
|
/* -------------------------------------------------------------------------
|
|
|
|
* misc //e functions
|
|
|
|
* ------------------------------------------------------------------------- */
|
|
|
|
|
|
|
|
|
|
|
|
/* 80STORE off. use RAMRD/RAMWRT for text/hires display page 1 */
|
|
|
|
E(iie_80store_off)
|
|
|
|
testl $SS_80STORE, SN(softswitches) # already off?
|
|
|
|
jz ram_nop
|
|
|
|
andl $~(SS_80STORE|SS_TEXTRD|SS_TEXTWRT|SS_HGRRD|SS_HGRWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k),SN(base_textrd)
|
|
|
|
movl $SN(apple_ii_64k),SN(base_textwrt)
|
|
|
|
movl $SN(apple_ii_64k),SN(base_hgrrd)
|
|
|
|
movl $SN(apple_ii_64k),SN(base_hgrwrt)
|
|
|
|
testl $SS_RAMRD, SN(softswitches)
|
|
|
|
jz iie_80store_off_noramrd
|
|
|
|
orl $(SS_TEXTRD|SS_HGRRD),SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2,SN(base_textrd)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2,SN(base_hgrrd)
|
|
|
|
iie_80store_off_noramrd:
|
|
|
|
testl $SS_RAMRD, SN(softswitches)
|
|
|
|
jz iie_80store_off_noramwrt
|
|
|
|
orl $(SS_TEXTWRT|SS_HGRWRT),SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2,SN(base_textwrt)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2,SN(base_hgrwrt)
|
|
|
|
iie_80store_off_noramwrt:
|
|
|
|
testl $SS_PAGE2, SN(softswitches)
|
|
|
|
jz ram_nop
|
|
|
|
orl $SS_SCREEN, SN(softswitches)
|
|
|
|
pushal
|
|
|
|
pushl $1
|
|
|
|
call SN(video_setpage)
|
|
|
|
addl $4, %esp
|
|
|
|
popal
|
|
|
|
/* call SN(video_redraw) # redraw */
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* 80STORE on. we use PAGE2 offset to access text page 1. if HIRES on
|
|
|
|
we also use PAGE2 offset to access hires page 1 */
|
|
|
|
E(iie_80store_on)
|
|
|
|
testl $SS_80STORE, SN(softswitches) # already on?
|
|
|
|
jnz ram_nop
|
|
|
|
orl $SS_80STORE, SN(softswitches)
|
|
|
|
testl $SS_PAGE2, SN(softswitches)
|
|
|
|
jnz iie_80store_on_page2_on
|
|
|
|
andl $~(SS_TEXTRD|SS_TEXTWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_textrd)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_textwrt)
|
|
|
|
testl $SS_HIRES, SN(softswitches)
|
|
|
|
jz iie_80store_on_cont
|
|
|
|
andl $~(SS_HGRRD|SS_HGRWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrrd)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrwrt)
|
|
|
|
jmp iie_80store_on_cont
|
|
|
|
|
|
|
|
iie_80store_on_page2_on:
|
|
|
|
orl $(SS_TEXTRD|SS_TEXTWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_textrd)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_textwrt)
|
|
|
|
testl $SS_HIRES, SN(softswitches)
|
|
|
|
jz iie_80store_on_cont
|
|
|
|
orl $(SS_HGRRD|SS_HGRWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrrd)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrwrt)
|
|
|
|
iie_80store_on_cont:
|
|
|
|
andl $~SS_SCREEN, SN(softswitches)
|
|
|
|
pushal
|
|
|
|
pushl $0 # page 1
|
|
|
|
call SN(video_setpage)
|
|
|
|
addl $4, %esp
|
|
|
|
popal
|
|
|
|
/* call SN(video_redraw) # redraw */
|
|
|
|
ret
|
|
|
|
|
|
|
|
return80: movb $0x80,%al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_80store)
|
|
|
|
testl $SS_80STORE,SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al,%al
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* RAMRD main. if 80STORE off then text/hires display pages are in
|
|
|
|
main memory. */
|
|
|
|
E(iie_ramrd_main)
|
|
|
|
testl $SS_RAMRD, SN(softswitches) # already off?
|
|
|
|
jz ram_nop
|
|
|
|
andl $~SS_RAMRD, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_ramrd)
|
|
|
|
testl $SS_80STORE, SN(softswitches) # 80store?
|
|
|
|
jnz iie_ramrd_main_80store_on
|
|
|
|
andl $~(SS_TEXTRD|SS_HGRRD), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_textrd)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrrd)
|
|
|
|
/* call SN(video_redraw) # redraw */
|
|
|
|
ret
|
|
|
|
iie_ramrd_main_80store_on:
|
|
|
|
testl $SS_HIRES, SN(softswitches)
|
|
|
|
jnz ram_nop
|
|
|
|
andl $~SS_HGRRD, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrrd)
|
|
|
|
/* call SN(video_redraw) # redraw */
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* RAMRD aux. if 80STORE off then text/hires display pages are in aux
|
|
|
|
memory. */
|
|
|
|
E(iie_ramrd_aux)
|
|
|
|
testl $SS_RAMRD, SN(softswitches) # already on?
|
|
|
|
jnz ram_nop
|
|
|
|
orl $SS_RAMRD, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_ramrd)
|
|
|
|
testl $SS_80STORE, SN(softswitches) # 80store?
|
|
|
|
jnz iie_ramrd_aux_80store_on
|
|
|
|
orl $(SS_TEXTRD|SS_HGRRD), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_textrd)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrrd)
|
|
|
|
/* call SN(video_redraw) # redraw */
|
|
|
|
ret
|
|
|
|
iie_ramrd_aux_80store_on:
|
|
|
|
testl $SS_HIRES, SN(softswitches)
|
|
|
|
jnz ram_nop # already set
|
|
|
|
orl $(SS_HGRRD), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrrd)
|
|
|
|
/* call SN(video_redraw) # redraw */
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_ramrd)
|
|
|
|
testl $SS_RAMRD, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al,%al
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* RAMWRT main. if 80STORE off then text/hires display pages are in
|
|
|
|
main memory. */
|
|
|
|
E(iie_ramwrt_main)
|
|
|
|
testl $SS_RAMWRT, SN(softswitches) # already off?
|
|
|
|
jz ram_nop
|
|
|
|
andl $~SS_RAMWRT, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_ramwrt) # main RAM
|
|
|
|
testl $SS_80STORE, SN(softswitches) # 80store?
|
|
|
|
jnz iie_ramwrt_main_80store_on
|
|
|
|
andl $~(SS_TEXTWRT|SS_HGRWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_textwrt)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrwrt)
|
|
|
|
/* call SN(video_redraw) # redraw */
|
|
|
|
ret
|
|
|
|
iie_ramwrt_main_80store_on:
|
|
|
|
testl $SS_HIRES, SN(softswitches)
|
|
|
|
jnz ram_nop
|
|
|
|
andl $~SS_HGRWRT, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_hgrwrt)
|
|
|
|
/* call SN(video_redraw) # redraw */
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* RAMWRT aux. if 80STORE off then write to text/hires display pages
|
|
|
|
are in aux memory. */
|
|
|
|
E(iie_ramwrt_aux)
|
|
|
|
testl $SS_RAMWRT, SN(softswitches) # already on?
|
|
|
|
jnz ram_nop
|
|
|
|
orl $SS_RAMWRT, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_ramwrt) # aux RAM
|
|
|
|
testl $SS_80STORE, SN(softswitches) # 80store?
|
|
|
|
jnz iie_ramwrt_aux_80store_on
|
|
|
|
orl $(SS_TEXTWRT|SS_HGRWRT), SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_textwrt)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrwrt)
|
|
|
|
/* call SN(video_redraw) # redraw */
|
|
|
|
ret
|
|
|
|
iie_ramwrt_aux_80store_on:
|
|
|
|
testl $SS_HIRES, SN(softswitches)
|
|
|
|
jnz ram_nop
|
|
|
|
orl $SS_HGRWRT, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_hgrwrt)
|
|
|
|
/* call SN(video_redraw) # redraw */
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_ramwrt)
|
|
|
|
testl $SS_RAMWRT, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_altzp_main)
|
|
|
|
testl $SS_ALTZP, SN(softswitches)
|
|
|
|
jz 1f /* test if ALTZP already off -
|
|
|
|
* due to d000-bank issues it is
|
|
|
|
* *needed*, not just a shortcut */
|
|
|
|
andl $~SS_ALTZP, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_stackzp)
|
|
|
|
andl $0xFFFF, SP_Reg
|
|
|
|
testl $SS_LCRAM|SS_LCWRT, SN(softswitches)
|
|
|
|
jz 1f /* shortest path for common case */
|
|
|
|
testl $SS_LCRAM, SN(softswitches)
|
|
|
|
jz 2f
|
|
|
|
subl $0x2000, SN(base_d000_rd)
|
|
|
|
movl $SN(language_card)-0xE000, SN(base_e000_rd)
|
|
|
|
2: testl $SS_LCWRT, SN(softswitches)
|
|
|
|
jz 1f
|
|
|
|
subl $0x2000, SN(base_d000_wrt)
|
|
|
|
movl $SN(language_card)-0xE000, SN(base_e000_wrt)
|
|
|
|
1: ret
|
|
|
|
|
|
|
|
E(iie_altzp_aux)
|
|
|
|
testl $SS_ALTZP, SN(softswitches)
|
|
|
|
jnz 1f /* test if ALTZP already on -
|
|
|
|
* due to d000-bank issues it is
|
|
|
|
* *needed*, not just a shortcut */
|
|
|
|
orl $SS_ALTZP, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_stackzp)
|
|
|
|
orl $BANK2, SP_Reg
|
|
|
|
testl $SS_LCRAM|SS_LCWRT, SN(softswitches)
|
|
|
|
jz 1f /* shortest path for common case */
|
|
|
|
lc_to_auxmem: /* called by lc routines */
|
|
|
|
testl $SS_LCRAM, SN(softswitches)
|
|
|
|
jz 2f
|
|
|
|
addl $0x2000, SN(base_d000_rd)
|
|
|
|
movl $SN(language_card)-0xC000, SN(base_e000_rd)
|
|
|
|
2: testl $SS_LCWRT, SN(softswitches)
|
|
|
|
jz 1f
|
|
|
|
addl $0x2000, SN(base_d000_wrt)
|
|
|
|
movl $SN(language_card)-0xC000, SN(base_e000_wrt)
|
|
|
|
1: ret
|
|
|
|
|
|
|
|
E(iie_check_altzp)
|
|
|
|
testl $SS_ALTZP, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_80col_off)
|
|
|
|
testl $SS_80COL, SN(softswitches)
|
|
|
|
jz ram_nop
|
|
|
|
andl $~SS_80COL, SN(softswitches)
|
|
|
|
testl $(SS_TEXT|SS_MIXED|SS_DHIRES), SN(softswitches)
|
|
|
|
jnz SN(video_redraw)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_80col_on)
|
|
|
|
testl $SS_80COL, SN(softswitches)
|
|
|
|
jnz ram_nop
|
|
|
|
orl $SS_80COL, SN(softswitches)
|
|
|
|
testl $(SS_TEXT|SS_MIXED|SS_DHIRES), SN(softswitches)
|
|
|
|
jnz SN(video_redraw)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_80col)
|
|
|
|
testl $SS_80COL, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_altchar_off)
|
|
|
|
testl $SS_ALTCHAR, SN(softswitches)
|
|
|
|
jz ram_nop
|
|
|
|
andl $~SS_ALTCHAR, SN(softswitches)
|
2013-11-19 06:12:00 +00:00
|
|
|
pushal
|
2013-06-11 07:08:15 +00:00
|
|
|
call SN(c_set_primary_char)
|
2013-11-19 06:12:00 +00:00
|
|
|
popal
|
2013-06-11 07:08:15 +00:00
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_altchar_on)
|
|
|
|
testl $SS_ALTCHAR, SN(softswitches)
|
|
|
|
jnz ram_nop
|
|
|
|
orl $SS_ALTCHAR, SN(softswitches)
|
2013-11-19 06:12:00 +00:00
|
|
|
pushal
|
2013-06-11 07:08:15 +00:00
|
|
|
call SN(c_set_altchar)
|
2013-11-19 06:12:00 +00:00
|
|
|
popal
|
2013-06-11 07:08:15 +00:00
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_altchar)
|
|
|
|
testl $SS_ALTCHAR, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* unset ioudis flag and read_gc_strobe */
|
|
|
|
E(iie_ioudis_off)
|
|
|
|
andl $~SS_IOUDIS, SN(softswitches)
|
|
|
|
jmp SN(read_gc_strobe)
|
|
|
|
|
|
|
|
/* set ioudis flag and read_gc_strobe */
|
|
|
|
E(iie_ioudis_on)
|
|
|
|
orl $SS_IOUDIS, SN(softswitches)
|
|
|
|
jmp SN(read_gc_strobe)
|
|
|
|
|
|
|
|
/* check ioudis flag and read_gc_strobe */
|
|
|
|
E(iie_check_ioudis)
|
|
|
|
call SN(read_gc_strobe)
|
|
|
|
testl $SS_IOUDIS, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_dhires_on)
|
|
|
|
testl $SS_IOUDIS, SN(softswitches)
|
|
|
|
jz ram_nop
|
|
|
|
orl $SS_DHIRES, SN(softswitches)
|
|
|
|
call SN(video_redraw)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_dhires_off)
|
|
|
|
testl $SS_IOUDIS, SN(softswitches)
|
|
|
|
jz ram_nop
|
|
|
|
andl $~SS_DHIRES, SN(softswitches)
|
|
|
|
call SN(video_redraw)
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* check dhires flag and read_gc_strobe */
|
|
|
|
E(iie_check_dhires)
|
|
|
|
call SN(read_gc_strobe)
|
|
|
|
testl $SS_DHIRES, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_text)
|
|
|
|
testl $SS_TEXT, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_mixed)
|
|
|
|
testl $SS_MIXED, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_page2)
|
|
|
|
testl $SS_PAGE2, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_hires)
|
|
|
|
testl $SS_HIRES, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_bank)
|
|
|
|
testl $SS_BANK2, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_lcram)
|
|
|
|
testl $SS_LCRAM, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* HACK not doing anything... */
|
|
|
|
E(iie_check_vbl)
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* ---------------------------------- */
|
|
|
|
|
|
|
|
E(iie_c3rom_peripheral)
|
|
|
|
andl $~SS_C3ROM, SN(softswitches)
|
|
|
|
testl $SS_CXROM, SN(softswitches)
|
|
|
|
jnz 1f /* CXROM-internal preempts C3ROM */
|
|
|
|
movl $SN(apple_ii_64k), SN(base_c3rom)
|
|
|
|
1: ret
|
|
|
|
|
|
|
|
E(iie_c3rom_internal)
|
|
|
|
orl $SS_C3ROM, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_c3rom)
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_c3rom)
|
|
|
|
testl $SS_C3ROM, SN(softswitches)
|
|
|
|
jz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_cxrom_peripheral)
|
|
|
|
andl $~SS_CXROM, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k), SN(base_cxrom)
|
2013-11-23 07:40:24 +00:00
|
|
|
movl $SN(MB_Read), SN(base_c4rom)
|
|
|
|
movl $SN(MB_Read), SN(base_c5rom) // HACK FIXME -- MB is hardcoded, what about Phasor?
|
2013-06-11 07:08:15 +00:00
|
|
|
testl $SS_C3ROM, SN(softswitches)
|
|
|
|
jnz 1f
|
|
|
|
movl $SN(apple_ii_64k), SN(base_c3rom)
|
|
|
|
1: ret
|
|
|
|
|
|
|
|
E(iie_cxrom_internal)
|
|
|
|
orl $SS_CXROM, SN(softswitches)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_cxrom)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_c3rom)
|
2013-11-23 07:40:24 +00:00
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_c4rom)
|
|
|
|
movl $SN(apple_ii_64k)+BANK2, SN(base_c5rom)
|
2013-06-11 07:08:15 +00:00
|
|
|
ret
|
|
|
|
|
|
|
|
E(iie_check_cxrom)
|
|
|
|
testl $SS_CXROM, SN(softswitches)
|
|
|
|
jnz return80
|
|
|
|
xorb %al, %al
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* HACK!!!!! - how does the expansion slot get referenced? need to handle other roms requesting to use this area!!!! */
|
|
|
|
E(iie_read_slot_expansion)
|
|
|
|
orl SN(c8rom_offset), EffectiveAddr_E
|
|
|
|
movb SN(apple_ii_64k)(,EffectiveAddr_E,1), %al
|
|
|
|
andl $0xFFFF, EffectiveAddr_E
|
|
|
|
ret
|
|
|
|
|
|
|
|
/* HACK!!!!! - how does the expansion slot get referenced? */
|
|
|
|
E(iie_disable_slot_expansion)
|
|
|
|
ret
|
|
|
|
|