6502/cc65
1
0
Fork 0
mirror of https://github.com/cc65/cc65.git synced 2024-12-25 02:29:52 +00:00
Code Issues Projects Releases Wiki Activity
befc9533c6
cc65/libsrc/cbm610/extzp.s

57 lines
1.6 KiB
ArmAsm
Raw Normal View History

Complete redesign of the CBM610 support. Use wrappers to call the kernal in bank 15 instead of implementing kernal functionality within the cc65 libs (eats performance but is much smaller and simpler). Improved startup/shutdown code allows a return to the system bank without calling the BASIC cold start vector. git-svn-id: svn://svn.cc65.org/cc65/trunk@2793 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-12-20 23:13:26 +00:00
;
; Ullrich von Bassewitz, 2003-12-20
;
; Additional zero page locations for the CBM610.
; NOTE: This file is actually linked to an application with its full contents,
; so the program comes up with the values given in this file.
;
; ------------------------------------------------------------------------
.include "extzp.inc"
.segment "EXTZP" : zeropage
; The following values get initialized from a table in the startup code.
; While this sounds crazy, it has reasons that have to do with modules (and
; we have the space anyway). So when changing anything, be sure to adjust the
; initializer table
sysp1: .word $0000
sysp3: .word $0000
Removed (pretty inconsistently used) tab chars from source code base.
2013-05-09 11:56:54 +00:00
crtc: .word $0000
sid: .word $0000
ipccia: .word $0000
cia: .word $0000
acia: .word $0000
tpi1: .word $0000
tpi2: .word $0000
ktab1: .word $0000
ktab2: .word $0000
ktab3: .word $0000
ktab4: .word $0000
Complete redesign of the CBM610 support. Use wrappers to call the kernal in bank 15 instead of implementing kernal functionality within the cc65 libs (eats performance but is much smaller and simpler). Improved startup/shutdown code allows a return to the system bank without calling the BASIC cold start vector. git-svn-id: svn://svn.cc65.org/cc65/trunk@2793 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-12-20 23:13:26 +00:00
sysp0: .word $0000
Removed (pretty inconsistently used) tab chars from source code base.
2013-05-09 11:56:54 +00:00
time: .dword $0000
Complete redesign of the CBM610 support. Use wrappers to call the kernal in bank 15 instead of implementing kernal functionality within the cc65 libs (eats performance but is much smaller and simpler). Improved startup/shutdown code allows a return to the system bank without calling the BASIC cold start vector. git-svn-id: svn://svn.cc65.org/cc65/trunk@2793 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-12-20 23:13:26 +00:00
segsave: .byte 0
ktmp: .byte 0
CURS_X: .byte 0
CURS_Y: .byte 0
Minor changes and cleanup git-svn-id: svn://svn.cc65.org/cc65/trunk@2796 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-12-20 23:38:42 +00:00
RVS: .byte 0
Made Olivers devnum patch (r4588) work with the PET-II models. On these machines, the program runs in a separate 64K bank, and zeropage variables need to be copied from the system bank into the execution bank to read by a simple load operation. The change is currently untested! git-svn-id: svn://svn.cc65.org/cc65/trunk@4597 b7a2c559-68d2-44c3-8de9-860c34a00d81
2010-02-20 19:46:51 +00:00
DEVNUM: .byte 0
Design change: Do keyboard polling internally without calling the kernal in the system bank. For one this performs better (several %), second it allows to handle the function keys in conformance with other platforms. Without the custom keyboard routine, we would have to apply some more magic to the function keys to make them work as with other cc65 targets. git-svn-id: svn://svn.cc65.org/cc65/trunk@2811 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-12-21 18:43:25 +00:00
config: .byte 0
Complete redesign of the CBM610 support. Use wrappers to call the kernal in bank 15 instead of implementing kernal functionality within the cc65 libs (eats performance but is much smaller and simpler). Improved startup/shutdown code allows a return to the system bank without calling the BASIC cold start vector. git-svn-id: svn://svn.cc65.org/cc65/trunk@2793 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-12-20 23:13:26 +00:00
CharPtr: .word 0
Design change: Do keyboard polling internally without calling the kernal in the system bank. For one this performs better (several %), second it allows to handle the function keys in conformance with other platforms. Without the custom keyboard routine, we would have to apply some more magic to the function keys to make them work as with other cc65 targets. git-svn-id: svn://svn.cc65.org/cc65/trunk@2811 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-12-21 18:43:25 +00:00
; Stuff for our own kbd polling routine
keyidx: .byte 0 ; Number of keys in keyboard buffer
keybuf: .res 10 ; Keyboard buffer
keyscanbuf: .byte 0
keysave: .byte 0
modkey: .byte 0
norkey: .byte 0
graphmode: .byte 0
lastidx: .byte 0
rptdelay: .byte 0
rptcount: .byte 0
Complete redesign of the CBM610 support. Use wrappers to call the kernal in bank 15 instead of implementing kernal functionality within the cc65 libs (eats performance but is much smaller and simpler). Improved startup/shutdown code allows a return to the system bank without calling the BASIC cold start vector. git-svn-id: svn://svn.cc65.org/cc65/trunk@2793 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-12-20 23:13:26 +00:00
Minor changes and cleanup git-svn-id: svn://svn.cc65.org/cc65/trunk@2796 b7a2c559-68d2-44c3-8de9-860c34a00d81
2003-12-20 23:38:42 +00:00
Reference in New Issue Copy Permalink