Search found 11 matches
- Tue Nov 14, 2023 8:27 am
- Forum: Emulation and Simulation
- Topic: Linux console-based 6502 emulator anywhere?
- Replies: 29
- Views: 38825
Re: Linux console-based 6502 emulator anywhere?
anyone tried to compile source for windows? got a lot of errors.
- Tue Apr 02, 2019 9:21 am
- Forum: Nostalgia
- Topic: Sweet-16 on Apple ii
- Replies: 8
- Views: 3405
Re: Sweet-16 on Apple ii
barrym95838,
thank you for example.
Can you explain how bytecode Dr works?
I've found description, but I do not understand:
thank you for example.
Can you explain how bytecode Dr works?
I've found description, but I do not understand:
Code: Select all
;DR 1 ACC<-ACC-R
;Dn CPR n R13 <-- (R0) - (Rn),R14 <-- status flags.
;Dr CMP r RD=R0-Rr, set status Compare result to RD,w:CPR Rn compare
- Sun Mar 31, 2019 8:26 pm
- Forum: Nostalgia
- Topic: Sweet-16 on Apple ii
- Replies: 8
- Views: 3405
Re: Sweet-16 on Apple ii
If you select "Apple ][ (Original)" from the Configuration menu, Sweet16 will be waiting there for you at $F689.
What AppleWin version works correct with original A2 ?
Working on SW16 and I had a question: SW16 uses R12 for store return adresses for RS/BS, seems ($18)=$FFFF. From other side ...
What AppleWin version works correct with original A2 ?
Working on SW16 and I had a question: SW16 uses R12 for store return adresses for RS/BS, seems ($18)=$FFFF. From other side ...
- Thu Feb 28, 2019 3:58 am
- Forum: Programming
- Topic: R6501 Disassembler?
- Replies: 31
- Views: 6379
Re: R6501 Disassembler?
Some opcodes. I think I didn't miss anything
- Tue Feb 26, 2019 5:58 am
- Forum: Programming
- Topic: R6501 Disassembler?
- Replies: 31
- Views: 6379
Re: R6501 Disassembler?
whartung wrote:
The best test of a disassembler is to disassemble code that you have the source code to and check that it matches.
- Tue Feb 26, 2019 5:53 am
- Forum: Emulation and Simulation
- Topic: Testing instruction timings for 6502 emulators
- Replies: 30
- Views: 12162
Re: Testing instruction timings for 6502 emulators
Agree. I have enough emulators of real hardware, just interested in code (instruction set etc) for test emulator.
- Mon Feb 25, 2019 5:03 am
- Forum: Programming
- Topic: R6501 Disassembler?
- Replies: 31
- Views: 6379
Re: R6501 Disassembler?
is exists instruction set for testing disassembler?
- Mon Feb 25, 2019 4:59 am
- Forum: Emulation and Simulation
- Topic: Testing instruction timings for 6502 emulators
- Replies: 30
- Views: 12162
Re: Testing instruction timings for 6502 emulators
How important timings for an emulator? What code need for make sure what emulator correct?
- Wed Oct 31, 2018 4:49 pm
- Forum: Nostalgia
- Topic: Sweet-16 on Apple ii
- Replies: 8
- Views: 3405
Re: Sweet-16 on Apple ii
BigEd , thank you, I will read
my attempt to use SW16, it generate A^2 table. Didn't understand all instructions, maybe code must be done simple:
ldy #0
jsr sw16
sub r0;set 0,0 ;r0=0
st 6 ;r6=r0
inr 6
rtn
mm
lda 0
sta sqt,y
lda 1
sta sqt+256,y
jsr sw16
add 6 ; r0=r0+r6
inr 6 ;r6+1
inr 6 ...
my attempt to use SW16, it generate A^2 table. Didn't understand all instructions, maybe code must be done simple:
ldy #0
jsr sw16
sub r0;set 0,0 ;r0=0
st 6 ;r6=r0
inr 6
rtn
mm
lda 0
sta sqt,y
lda 1
sta sqt+256,y
jsr sw16
add 6 ; r0=r0+r6
inr 6 ;r6+1
inr 6 ...
- Wed Oct 31, 2018 1:15 pm
- Forum: Nostalgia
- Topic: Sweet-16 on Apple ii
- Replies: 8
- Views: 3405
Re: Sweet-16 on Apple ii
yes, it works. Thank you!
Is way exists to switch banks via assembler? I found one call - $A59E
Is way exists to switch banks via assembler? I found one call - $A59E
- Wed Oct 31, 2018 6:48 am
- Forum: Nostalgia
- Topic: Sweet-16 on Apple ii
- Replies: 8
- Views: 3405
Sweet-16 on Apple ii
Hello.
I has a question: how to configure emulator for use Sweet-16?
I took AppleWin, but i cannot load binary file at $F689.
I has a question: how to configure emulator for use Sweet-16?
I took AppleWin, but i cannot load binary file at $F689.