-
Notifications
You must be signed in to change notification settings - Fork 3
/
Copy pathc128system.asm
executable file
·96 lines (75 loc) · 3.63 KB
/
c128system.asm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
// c128 zeropage, system locations and kernal jump table
// definitions. Not all of them, but the most important ones.
// import this first, as consts can only be used AFTER defining them.
// VCD helper subroutines are included on the bottom of the file.
#importonce // and import BEFORE c128macros.asm
// zero page locations
.const STATUS = $90 // I/O operation status byte
.const FA = $ba // current device number
.const MODE = $d7 // sense active screen. bit 7 on is 80 columns
// common RAM subroutines. common RAM ends at $03ff
.const FETCH = $02a2 // lda(vec),y from any bank
.const FETVEC = $02aa // vector for FETCH. zero page address
.const STASH = $02af // sta(vec),y from any bank
.const STAVEC = $02b9 // vector for STASH. zero page address
.const CMPARE = $02be // cmp(vec),y from any bank
.const CMPVEC = $02c8 // vector for CMPARE. zero page address
//.const JSRFAR
//.const JMPFAR
.const CURRENT_BANK = $03d5 // the current bank config. $0f is default.
.const FAST = $77b3 // handles the fast statement
.const SLOW = $77c4 // handles the slow statement
// editor jump table
.const JESCAPE = $c01e // perform ESC code
.const COLOR80 = $ce5c // conversion table - vic to vdc color code
// I/O
.const CLKRATE = $d030 // processor clock speed
// c128 VCD
.const VDCADR = $d600 // VDC address/status register
.const VDCDAT = $d601 // VDC data register
// c128 MMU (mirrored from $d500)
.const MMUCR = $ff00 // bank configuration register
.const PCRA = $ff01 // preconfig register A
.const PCRB = $ff02 // preconfig register B
.const PCRC = $ff03 // preconfig register C
.const PCRD = $ff04 // preconfig register D
.const MMUMCR = $ff05 // cpu mode configuration register
.const MMURCR = $ff06 // ram configuration register
// c128 specific kernal table
.const SPIN = $ff47 // serial fast input or output
.const CLOSE_ALL = $ff4a // close all files to a device
.const C64MODE = $ff4d // enter 64 mode
.const DMA_CALL = $ff50 // send command to dma device
.const BOOT_CALL = $ff53 // boot a program from disk
.const PHOENIX = $ff56 // init function cartridges
.const SWAPPER = $ff5f // switch between 40 or 80 colums
.const DLCHR = $ff62 // copy char defintions from ROM to VDC RAM
.const PFKEY = $ff65 // program function key
.const SETBNK = $ff68 // set bank for i/o operations
.const GETCFG = $ff6b // get MMU bank configuration byte
.const JSRFAR = $ff6e // jump to subroutine in any bank
.const JMPFAR = $ff71 // jump to routine in any bank
.const INDFET = $ff74 // lda indexed from any bank
.const INDSTA = $ff77 // sta indexed to any bank
.const INDCMP = $ff7a // cmp indexed to any bank
.const KEY = $ff9f // scans the entire c128 keyboard
// generic kernal jump table
.const SETLFS = $ffba // set logical file
.const SETNAM = $ffbd // set file name
.const OPEN = $ffc0 // open device channel
.const CLOSE = $ffc3 // close device channel
.const CHKIN = $ffc7 // set channel in
.const CHKOUT = $ffc9 // set channel out
.const CLRCH = $ffcc // restore default i/o channels
.const BASIN = $ffcf // input from channel
.const BSOUT = $ffd2 // output to channel
.const LOAD = $ffd5 // load from device
.const SAVE = $ffd8 // save to device
.const SETTIM = $ffdb // set software clock
.const RDTIM = $ffde // read software clock
.const STOP = $ffe1 // scan the STOP key
.const GETIN = $ffe4 // get key input
.const CLALL = $ffe7 // close all files and channels
.const SCRORG = $ffed // get current screen window size
.const PLOT = $fff0 // set or read cursor position
// now uses $e4 - $ee, editor parameters