Fulltext results:
- discovery3
- . GONE is used to execute tokens. Before modifying these vectors, keep in mind that many programs, s... xperienced programmer should find the words to be self-evident in the context which they are used. [Mix... o disk. 2) Analysing the loader. 3) Modifying the loader and pulling the files off tape. ... onal" as well as the casual cracker. Chapter 3: Modifying the loader and pulling the files off tape. ------
- discovery1
- with roms yet again > sta $01 > inc selfmod+1 ; self-modifying code!!! >selfmod lda #$xx ; #$xx = this is the byte changed by 'inc selfmod+1' > and #$01 > tax > lda... en it might be as it's overloaded during loading. Selfmodifying loaders are frequet to prevent you from
- chacking21
- he code that follows the STA SCROLY command using self-modifying code techniques. When the STA SCROLY happens, the... in the FLI routine (before the STA SCROLY) using self-modifying code. Here is the relevant source code which take... at $4000 sta $ff00 1$: ldy #$00 ldx #$07 ; Use self-modifying code to create three ; Point #5 mark1: lda $4000 ... s available, and what the routines do, is handy. Self-modifying code comes in handy when large portions of code c
- chacking20
- ment is to move the routine to zero-page, and use self- modifying code. In general, this results in the fastest digi players. We should of course have the routin
- chacking18
- e VLIR application on a 5 1/4 disk. I did this by modifying the VLIR table as to include that PRG file as a V... een using to patch geoWrite 128 v2.1 to a v2.2 by modifying VLIR #0 and #5. I haven't touched other modules y... dBTable would be shared by other requestors, some modifying code was used. The routine modifies the dBTable w... of information. For the name, "DEBRIS.SRF" (for self-running FLI) works. If you listed "FLIview" you
- chacking16
- routine. It just blasts into the bitmap, * with self-modifying code determining the entry and * exit points. * F... JMP FILLMAIN ;166 bytes As before, self-modifying code is used to determine the entry and exit poin
- chacking17
- on't ask questions! Better than a huge rewrite of self-modifying code. Wrapping up: With the above fix in place... with one hitch. The whole tech-tech routine uses self-modifying code all over the place. The modifying instructions immediately follow the routine, and ... , providing you didn't give a hang about your own self respect. The 8563 designer mentioned that the bl
- chacking15
- uld have to do it every time I use another mouse. Modifying the keyboard seemed impracticable, so I decided ... opics as X1541 transferring and amaze your self with articles like how to connect a joypad... reasons, some idealistic and some just plain selfish. Q: In the documentation accompanying BFort... guys in California figured out how to make a self booting cartridge out of it and sent me a Bla
- chacking13
- ine to `unroll' the graphics updating loop using self-modifying code , resulting in speed increases. Here's a s... lda $ffff,y dummy sta $ffff,y; This is the self-modifying code to draw the ; backdrop... fill 24 characters. twain lda $ffff,y; Self-modifying code used here to draw the
- chacking12
- (BASIC or ML). The first two parameters should be self-explanatory, but the load type may confuse you. I... the cost of commercial inkblot cards for our self-psycho-analysis sessions here at Hacking Headq... interest is the information about Craig Bruce modifying his Swiftlink to do 115,200 bps. Right before... nts whittled that down to three. One of my disks self-destructed about the day I was ready to finish, s
- chacking10
- installing itself. But in its robustness it uses self-modifying code to store the original interrupt routine addr... nop nop nop oldirq = * + 1 ; Placeholder for self-modifying code jmp * ; Return to the original int... full 1 Full +---+ | 2 | Overrun*: Self-clearing** +---+ ------------------------- ... 1 Error +---+ | 1 | Framing Error*: Self-clearing** +---+ ----------------------------
- chacking9
- lda #0 ; For those who don't like self modifying code storeX = * + 1 ; this can b... _new_application_programs. (Perhaps this is a bit self-serving). Eight-bit computers have two big advan... to hold it. Commodore 1541 drives were made to be self- aligning, apparently, which would be fine if "he
- chacking7
- one bit) taken into account STA LOOP2+2 ; Self-modifying again.. LOOP2 LDA $D000,X STA (ZP),Y
- chacking8
- in a lot of ways. For one thing it could be made self-modifying. All variables could be stored in zero page. In ... t) The point here is that it's fast. If you use self-modifying code, you can get this down to 15 cycles per poin... ruction.below.doesn't.work...Somehow *.the.RTS.is.modifying.X.and.Y??? *.TAY..;Store.in.Y STA TY1 RTS ;I.h... ith minimal delay (maximal responsiveness). This self-bootstrapping user process concept comes from my
- chacking5
- est routine I have ever written uses some serious selfmodification tricks. There are also some other tri... a table (cleared before this routine) [xx] marks selfmodification. For example loop counter, bit mask a... (thanks Lars Hamre). That made me shameful to be selfish, especially after I learned alot of from it. W... the right speed although the best solution is for modifying the CIA to 50Hz like he mentions above.] How the