Apple-2-SW/prog8
1
0
Fork 0
mirror of https://github.com/irmen/prog8.git synced 2025-01-12 04:30:03 +00:00
Code Issues Projects Releases Wiki Activity

cx16: reset rom/ram/monitor banks at program exit to sane values.

Browse Source
This commit is contained in:
Irmen de Jong 2022-07-01 00:14:38 +02:00
parent 7901ec2a64
commit fb989ae62f
3 changed files with 7 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
codeGenCpu6502/src/prog8/codegen/cpu6502/ProgramAndVarsGen.kt
View File

@ -127,11 +127,8 @@ internal class ProgramAndVarsGen(
"cx16" -> { "cx16" -> {
if(options.floats) if(options.floats)
asmgen.out(" lda #4 | sta $01") // to use floats, make sure Basic rom is banked in asmgen.out(" lda #4 | sta $01") // to use floats, make sure Basic rom is banked in
asmgen.out(" jsr main.start | lda #4 | sta $01") asmgen.out(" jsr main.start")
if(!options.noSysInit)
asmgen.out(" jmp ${compTarget.name}.cleanup_at_exit") asmgen.out(" jmp ${compTarget.name}.cleanup_at_exit")
else
asmgen.out(" rts")
} }
"c64" -> { "c64" -> {
asmgen.out(" jsr main.start | lda #31 | sta $01") asmgen.out(" jsr main.start | lda #31 | sta $01")

6
compiler/res/prog8lib/cx16/syslib.p8
View File

@ -639,8 +639,12 @@ asmsub init_system_phase2() {
asmsub cleanup_at_exit() { asmsub cleanup_at_exit() {
; executed when the main subroutine does rts ; executed when the main subroutine does rts
; just an rts here, nothing special to clean up on cx16
%asm {{ %asm {{
lda #1
sta $00 ; ram bank 1
lda #4
sta $01 ; rom bank 4 (kernal)
stz $2d ; hack to reset machine code monitor bank to 0
rts rts
}} }}
} }

3
docs/source/todo.rst
View File

@ -3,9 +3,6 @@ TODO
For next release For next release
^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^
- cx16 programs seem to poke 0, 56 at exit?
- assembling hello4.asm prints stray characters in the string
- petaxian roller.p8 line 49 (also see test.p8) generates large code compared to 8.2 - petaxian roller.p8 line 49 (also see test.p8) generates large code compared to 8.2
- code gen for if statements has become inefficient? vm/6502? - code gen for if statements has become inefficient? vm/6502?