#255

... D HABERMAN") July 1989 Digest Index ("MR. DAVID HABERMAN") Color computing (Pete Soper) Beer judge exam, Houston, Texas (drutx!homer) HOMEBREW Digest #255 (Sat 16 September 1989) Re: Color computing (Mike Fertsch) Lager ferment temp (M Nevar) Re: Wort Chiller (Bob Clark - Sun Engineering) Re: Homebrew Digest Indices (Greg Wageman) Hunter Energy Monitor (Crawford.WBST129) HOMEBREW Digest #256 (Sun 17 September 1989) restarting fermentation (Dick Dunn) indices homebrew digest indices (Wayne Hamilton) Re: [index for homebrew digest: useful?] (Dr. T. Andrews) HOMEBREW Digest #257 (Mon 18 September 1989) Re: Lager ferment temp (M Nevar) (John D. Polst ...

... b (25Mhz 68030+68882) ... #425 (yes, a genuine '030-with-MMU!) B5000-40/4Mb (40Mhz 68EC030) ....... #850 50Mhz 68882 for B5000-40 ........... #255 Extra 4Mb of RAM for B5000-40 ...... #212 (far cheaper elsewhere) CONTACT Solid State Leisure Ltd, 80 Finedon Road, Irthlingborough, Northants NN9 5TZ, England. Tel +44 933 650677 If you have any questions, feel free to e-mail me on the net. SSL are on the point of releasing some new products (including an '040 board), so my price list above is probably incomplete. Barry McConnell bmccnnll@unix1.tcd.ie KCS Power PC Board v4.3 IBM Emulator + 512Kb RAM expansion (undercarriage slot on A500 or ...

... dec). Finally a long is made up of 8 digits and is between 00 00 00 00 and FF FF FF FF (0 to 4294967295 dec). With other words: byte: $00 - $FF #0 - #255 word: $00 00 - $FF FF #0 - #65535 long: $00 00 00 00 - $FF FF FF FF #0 - #4294967295 As you can see a byte takes up one fourth of the memory a long does. This principle will be discussed further in the chapter dealing with HexEditors. I think it might be a good thing for you to learn how many digits a byte, a word and a long has. I will use these expressions later on. I chose to use these expressions (and not including floats and doubles) because I feel that even an experienced person can get f ...

... ode. Consider the following hypothetical program line: 100 MAT SEARCH A$()=HEX(A900A2FF) TO ADR$(),N You may recognize the hex string as "LDA #0, LDX #255". That program line will search array A$() for all occurences of the four-byte substring, and return the addresses [with respect to the first byte of A$()] of every match to array ADR$(), plus the total number of matches to N. If the number of matches is larger than the number of elements in ADR$(), this will be identified in N. A question: if you program in BASIC, how have you managed to get along without such capability up to now ? Page 19, Column 2 (The preceding example is not quite identic ...

... t around this and keep the other bits exactly the same but also changing bit 4 to equal 1 (Just assume all BITS in 532565 are 0): 10 LDA 53265 20 AND #255 30 ORA #16 40 STA 53265 Ok, firstly we get the value from 53265, we then AND this value with 255. The result of the AND is OR'ed with 16 to give the final result which is stored back at location 53265. 10 - Value 0000 0000 (We said assume that all bits in 53265 = 0) 20 - AND 1111 1111 The Result = 0000 0000 30 - ORA 0001 0000 The Result = 0001 0000 40 Store this back at 53265 As you can see bit 4 is a 1, but all the others are kept at 0. OK Here's a very useful tip for you. To invert a ...

... own movement we will produce a bounce effect. Lets get straight into the coding: 10 LDA #147 20 JSR $FFD2 30 LDA #00 40 STA 53280 50 STA 53281 60 LDA #255 70 STA 53269 80 STA 53276 90 LDA #02 100 STA 53285 110 LDA #03 120 STA 53286 130 LDX #00 140 COLOUR LDA #04 150 STA 53287,X 160 INX 170 CPX #08 180 BNE COLOUR 190 LDA #64 200 LDX #00 210 BACK STA 2040,X 220 INX 230 CPX #08 240 BEQ DONE 250 LDA 2040,X 260 TAY 270 INY 280 TYA 290 JMP BACK 300 DONE CLC 310 LDA #30 320 LDX #00 330 XPOS STA 53248,X 340 ADC #30 350 INX 360 INX 370 CPX #16 380 BNE XPOS 390 MOVE LDX #00 400 DATA LDA TABLE,X 410 CMP #255 420 BNE NOTFIN 430 JMP MOVE 440 LDY #00 450 YPOS ...

... up X & Y position of Sprite Move it Down Move it Up So lets write the code: 10 LDA #147 20 JSR $FFD2 30 LDA #00 40 STA 53280 50 STA 53281 60 LDA #255 70 STA 53269 80 STA 53276 90 LDA #02 100 STA 53285 110 LDA #03 120 STA 53286 130 LDX #00 140 COLOUR LDA #04 150 STA 53287,X 160 INX 170 CPX #08 180 BNE COLOUR 190 LDX #64 200 STX 2040 210 INX 220 STX 2041 230 INX 240 STX 2042 250 INX 260 STX 2043 270 INX 280 STX 2044 290 INX 300 STX 2045 310 INX 320 STX 2046 330 INX 340 STX 2047 350 LDY # 70 360 STY 53249 370 STY 53251 380 STY 53253 390 STY 53255 400 STY 53257 410 STY 53259 420 STY 53261 430 STY 53263 440 LDX #30 450 STX 53248 460 LDX #60 470 S ...