archive.worldofdragon.org

I cleanup the test programm a little bit: 10 ' MACHINE CODE LOADER 20 READ LA ' LOAD / EXECUTE ADDRESS 25 PRINT "POKE MACHINE CODE TO: $";HEX$(LA) 30 PA = LA ' START ADDRESS FOR POKE 50 READ HB$ ' HEX CONSTANTS 60 IF HB$="END" THEN 100 70 POKE PA,VAL("&H"+HB$) ' POKE VALUE INTO MEMORY 80 PA = PA + 1...

tormod wrote:Attached is the BASIC program "Editor & Assembler" by A.R.Billingham which I typed in from a magazine in 1984.

Can you explain how it works? Or is there anywhere some documentation?

zephyr wrote:

jedie wrote: btw. exists there a way to display the hex code instead of decimal value ?

Look here.

Thanks!

Other idea beside this: save the value to display into memory and peek it from memory in BASIC and convert/ print it...

In my example i use $0600 is it a good location?

Great question!

btw. must a assembler be "Dragon" specific or must it only 6809 specific?

OK, i must evaluate all :? Here a hand made test code, that doesn't output the expected value: 10 ' MACHINE CODE LOADER 20 READ LA ' LA = LOAD ADDRESS (START OF PROGRAM) 30 READ EA ' EA = ADDRESS OF FIRST INSTRUCTION 40 PA = EA 'TO BE EXECUTED 50 READ HB$ ' HEX CONSTANTS 60 IF HB$="END" THEN 100 70 ...

lda #-128 suba #1 ; overflow set but no carry lda #127 adda #1 ; overflow set but no carry Thank you, that's really really helps me! I have made two unittests: def test_Overflow01(self): self.cpu_test_run(start=0x1000, end=None, mem=[ 0x86, 0x80, # LDA #-128 0x80, 0x01, # SUBA #1 ]) self.assertEqua...

Also interesting:

SiMon6809 is a 6809 based educational computer.

http://www.8bitforce.com/simon6809/

But last Update Feb.2011

Ok, then we have ALLDREAM, DOSDREAM, Encoder 09 and Dasm... Which is the best for starting?

sixxie wrote:Not too complicated, just a little terse as anything that has to fit in such a small space is bound to be.

Good idea!

Ah! IMHO i found the error:

It seems that phpBB accept longer passwords than the Wiki. Maybe the Wiki login truncate the given password, so it's can't be accepted.