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byte (91), the (85), rom (60), word (58), journal (44), ramuse (42), code (37), from (31), txt (30), called (29), bank (29), fixed (27), cas (26), entry (23), conditions (23), hardware (19), this (18), and (16), page (16), address (14), exit (12), memory (11), are (11), rom_load (11), defend (11), crc (11), sha1 (11), that (10), into (10), defender (10), routine (9), subroutine (9), clear (9), 0x0800 (9), only (8), pdf (8), point (7), single (7), register (6), with (6), for (6), two (6), first (6), block (6), current (6), port (6), read (6), location (6), contents (6), soundramuse (6), soundhardware (6), used (5), jump (5), will (5), see (5), use (5), link (5), asm (5), soundcode (5), d03e (4), one (4), space (4), d055 (4), subroutines (4), like (4), not (4), does (4), any (4), size (4), restores (4), then (4), sram (4), they (4), each (4), bits (4), wide (4), thus (4), packed (4), msnybble (4), calls (4), found (4), fccc (4), fd2d (4), known (4), chain (4), phoenixj (4), other (3), d21f (3), have (3), however (3), can (3), find (3), where (3), ever (3), scrnblkclrp2 (3), pointer (3), 1st (3), saves (3), f813 (3), nybbles (3), lsnybble (3), locations (3), fc60 (3), consists (3), instruction (3), jmp (3), fc69 (3), further (3), discussion (3), all (3), made (3), via (3), beginning (3), ram (3), bank7 (3), bank3 (3), bank2 (3), bank1 (3), invaders (3), sound (3), jpg (3), same (2), d015 (2), fits (2), d07b (2), more (2), once (2), times (2), know (2), about (2), converge (2), d066 (2), continue (2), d07a (2), main (2), which (2), d095 (2), c5a1 (2), looks (2), its (2), think (2), table (2), yet (2), though (2), data (2), interrupts (2), could (2), either (2), screen (2), granularity (2), out (2), previous (2), begin (2), lines (2), 2nd (2), bytes (2), line (2), cleared (2), c7c8 (2), switches (2), specified (2), write (2), performs (2), actual (2), f822 (2), cxxx (2), bit (2), f838 (2), written (2), f84e (2), f864 (2), fc63 (2), fc66 (2), rountine (2), d000 (2), ffff (2), 0x1000 (2), event (2), scratch (2), pad (2), blend (2), bedlam (2), code1 (2), ramuse1 (2), pyramid (2), bank6 (2), bank5 (2), bank4 (2), bank0 (2), after_25 (2), after_24 (2), after_23 (2), after_22 (2), after_21 (2), after_20 (2), after_19 (2), after_18 (2), after_17 (2), after_16 (2), after_15 (2), after_14 (2), after_13 (2), after_12 (2), after_11 (2), after_10 (2), after_9 (2), after_8 (2), after_7 (2), after_6 (2), after_5 (2), after_4 (2), after_3 (2), after_2 (2), after_1 (2), after_start (2), early (2), time (2), asteroids (2), scramble (2), may2025 (2), func (2), main2 (2), vectorrom (2), gfx2 (2), sprites (2), gfx1 (2), theory (2), inc (2), arcade (2), boot (2), 1loader (2), d013, except, source, value, provided, ebf1, edc1, f40f, f418, d00c, d08f, f3d8, c472, d03a, d044, d05b, d0b3, d0ef, edd5, much, heavily, f2ae, far, aware, d7ac, d8c1, d94a, d9d2, d9da, d9e2, d9ea, d9f2, d9fa, dc23, e843, e88b, ea85, ebb2, edae, ede5, ef1e, efac, f1f4, f27e, c027, c0b2, c0ba, c0c2, c279, c2e3, c363, c374, c37c, c384, c38c, c394, c42e, c58a, c690, c698, c725, c735, c7c9, c7d9, c829, c861, d07c, d86c, d921, daba, dcf9, c006, c10e, c266, c351, c677, dbe5, e975, ea8a, ebb7, ee65, ee73, ef23, efb1, f2c1, d0ad, dc77, c397, c3bc, c3e1, c4b5, c54f, d0c7, f3fb, f41d, c47a, c546, c59e, d0f2, e526, e93a, face, problems, make, otherwise, may, discovered, uses, pick, packs, would, presumably, you, disabled, disable, calling, unnecessary, here, case, sounds, recipe, disaster, d260, anywhere, seem, structure, such, appears, created, unfortunately, f57b, sets, some, reason, haven, figured, completion, setting, ffb6, d41b, da81, c533, f5c7, scrnblkclr, bypasses, part, changes, converges, f58c, because, also, must, save, ffb9, d64d, d66d, d6a4, da53, f4a5, c15e, f5d1, vidmemclr, ffbc, d75a, d86f, d959, c043, c26c, c443, c681, c24a, c2c6, c5e6, ca2a, f7db, writeioport, writes, change, c068, c06d, c075, c07a, c114, c224, c36d, c3ef, c4f8, c506, c5f1, c5f9, c601, c609, c77c, c796, c9cb, ca70, ca9e, cab8, cac3, caff, cb13, cb1b, f7f1, readioport, reads, returns, was, c312, c0eb, c10b, c1c6, c1e2, c322, c347, c34e, c42f, c4c4, c4ee, c55c, c5b5, c7fb, c878, c9ac, ca18, ca22, ca76, sramread, reading, rdsrambyte, before, switching, wanted, speed, things, just, incorporated, d82b, d88b, de83, f83c, ffa1, c151, c332, c8dd, c951, c973, c991, sramwordrd, variation, followed, decreasingly, significant, digits, d8a4, dec5, ffa7, c149, c1c7, c32d, c937, c963, f83a, srambyterd, d775, ffa4, c101, c11a, c835, c8c8, cbf2, cbf7, cc38, cc4e, cc5e, cc6c, f842, sramwrite, writing, most, signigicant, nybble, wrsrambyte, d8d0, f86a, ffaa, c1b1, c1b9, c120, c95b, cbb5, cbc8, cc1b, ccce, sramwordwr, ffb0, c1ac, c1cc, c94e, cc08, f866, srambytewr, ffad, c84b, c854, cb9c, reasoning, behind, remains, mystery, e9a1, eab1, eb6c, ef5d, efe6, c404, c574, c5bc, c79b, e541, ec08, ee88, ee20, f438, e823, mame, rom_region, 0x19000, maincpu, 0x0d000, c3e52d7e, a57f5278ffe44248fc73f9925d107f4024ad981a, 0x0d800, 9a72348b, ed6ce796702ff32209ced3cb1ba3837dbafa526f, 0x0e000, 89b75984, a9481478da38f99efb67f0ecf82d084e14b93b42, 0x0f000, 94f51e9b, a24cfc55de56a72758c76fe2a55f1ec6c353b16f, 0x10000, 6870e8a5, 67ccc194b1753a18af0c85f5e603355549c4f727, 0x10800, f1f88938, 26e48dfeefa0766837b1e762695b9532dbc8bc5e, 0x11000, b649e306, 9d7bc3c89e5a53c575946f06702c722b864b1ff0, 0x11800, 9deaf6d9, 59b018ba0f3fe6eadfd387dc180ac281460358bc, 0x12000, 339e092e, 2f89951dbe55d80df43df8dcf497171f73e726d3, 0x12800, a543b167, 9292b94b0d74e57e03aada4852ad1997c34122ff, 0x16000, 65f4efd1, a960fd1559ed74b81deba434391e49fc6ec389ca, always, available, map, addresses, c000, cfff, instance, d045, appear, position, return, when, completes, processing, af1b, a05f, af2a, stack, storage, maybe, identified, points, zip, tools, stoned, morris, worm, virus, usvdobjs, ssvdobjs, section9, section8, section7, section6, section5, section4, section3, section2, section1, xenos, raakatu, code2, ramuse2, hauntedhouse, hardwaredisk, hardwarelevel1, hardwarelevel2, trs80, tetris, bank1f, bank1e, bank1d, bank1c, bank1b, bank1a, bank19, bank18, bank17, bank16, bank15, bank14, bank13, bank12, bank11, bank10, bank0f, bank0e, bank0d, bank0c, bank0b, bank0a, bank09, bank08, bank07, bank06, bank05, bank04, bank03, bank02, bank01, bank00, awakening, gameboy, kid, icarus, zelda, nes, doubleback, audio, analyzer, downland, level, maps, daggorath, popcorn, mega, bug, savegameviewer, walk, through, madness, minotaur, raaka, work, coco, data350, code350, dataorg, codeorg, colossalcave, missile, command, codebank7, codebank6, codebank5, codebank4, codebank3, codebank2, codebank1, codebank0, burger, entombed, doublegap, double, gap, codepal, combat, chess, battle, zone, stella, info, atari2600, sea, wolf, pilot, pit, tempest, scap, hhi, foreground, background, phoenix, pooyan, dvgprom, soundboard, mainboard, omega, race, moonpatrolsound, textcolors, spritecolorsets, spritecolors, imagebackgroundcolors, gfx5, city, gfx4, hills, gfx3, mountains, text, moon, patrol, cpu1fix, prompalettesprite, prompalettechar, promcolors, characters, cpu3, cpu2, secondary, cpu1, galaga, gfx, frogger, donkey, kong, soundrom, vid, cpu, later, mapping, bankfixed, memorymap, graphicsandcharacterassetinfo, crazyclimbermemorymapinfo, charenc, cclimber, buildings, bigspritegraphics, crazy, climber, centipede, dvg, orig, dec, rainbow, islands, amiga, site, home, contact,

Text of the page (random words):
defender ram use contact journal home arcade defender 75 ramuse site page amiga rainbow islands 1loader dec 1loader boot orig boot journal arcade asteroids 80 hardware ramuse code dvg vectorrom journal centipede hardware ramuse code crazy climber 1 bigspritegraphics pdf buildings pdf cclimber asm charenc inc crazyclimbermemorymapinfo pdf graphicsandcharacterassetinfo pdf memorymap inc defender 75 ramuse hardware bank1 bank2 bank3 bank7 bankfixed mapping txt soundhardware soundramuse soundcode defender theory early pdf defender theory later pdf defender cpu jpg defender rom b w jpg defender vid b w jpg soundrom txt donkey kong ai hardware ramuse code frogger sound soundhardware soundramuse soundcode hardware ramuse code gfx journal galaga 5 cpu1 main cpu2 secondary cpu3 sound gfx1 characters gfx2 sprites promcolors prompalettechar prompalettesprite cpu1fix journal moon patrol 75 hardware ramuse code gfx1 text gfx2 sprites gfx3 mountains gfx4 hills gfx5 city imagebackgroundcolors spritecolors spritecolorsets textcolors moonpatrolsound soundhardware soundramuse soundcode journal omega race 10 hardware ramuse mainboard soundhardware soundramuse soundboard dvgprom vectorrom journal pooyan ai hardware ramuse code phoenix 90 hardware ramuse code background foreground journal scramble hhi phoenixj func main2 pdf phoenixj func main2 scap phoenixj asm may2025 txt phoenixj asm may2025 txt pdf space invaders invaders asm hardware ramuse code journal tempest hardware ramuse code the pit ai hardware ramuse code time pilot sound soundhardware soundramuse soundcode hardware ramuse code journal sea wolf 1 hardware ramuse code journal scramble 1 soundhardware soundramuse soundcode journal atari2600 stella hardware info asteroids 5 ramuse code journal battle zone 1 ramuse code journal chess 1 ramuse code journal combat 10 ramuse code codepal journal double gap code doublegap asm journal entombed 1 ramuse code journal et 1 ramuse code journal burger time 1 ramuse codebank0 codebank1 codebank2 codebank3 codebank4 codebank5 codebank6 codebank7 journal missile command 1 ramuse code journal space invaders 1 ramuse code journal colossalcave codeorg dataorg code350 data350 coco hardware early work pyramid ramuse code journal raaka tu ramuse code journal bedlam ramuse code journal madness minotaur walk through after_start txt after_start cas after_1 txt after_1 cas after_2 txt after_2 cas after_3 txt after_3 cas after_4 txt after_4 cas after_5 txt after_5 cas after_6 txt after_6 cas after_7 txt after_7 cas after_8 txt after_8 cas after_9 txt after_9 cas after_10 txt after_10 cas after_11 txt after_11 cas after_12 txt after_12 cas after_13 txt after_13 cas after_14 txt after_14 cas after_15 txt after_15 cas after_16 txt after_16 cas after_17 txt after_17 cas after_18 txt after_18 cas after_19 txt after_19 cas after_20 txt after_20 cas after_21 txt after_21 cas after_22 txt after_22 cas after_23 txt after_23 cas after_24 txt after_24 cas after_25 txt after_25 cas ramuse code savegameviewer journal mega bug ramuse code journal popcorn ramuse code journal daggorath ramuse code level maps journal downland 5 ramuse code journal audio analyzer 5 ramuse code journal doubleback ramuse code journal nes zelda 5 hardware ramuse bank0 bank1 bank2 bank3 bank4 bank5 bank6 bank7 journal kid icarus 1 hardware ramuse bank0 bank1 bank2 bank3 bank4 bank5 bank6 bank7 journal gameboy hardware link s awakening 1 ramuse bank00 bank01 bank02 bank03 bank04 bank05 bank06 bank07 bank08 bank09 bank0a bank0b bank0c bank0d bank0e bank0f bank10 bank11 bank12 bank13 bank14 bank15 bank16 bank17 bank18 bank19 bank1a bank1b bank1c bank1d bank1e bank1f journal tetris 1 ramuse code journal trs80 hardwarelevel2 hardwarelevel1 hardwaredisk hauntedhouse ramuse1 code1 ramuse2 code2 journal pyramid ramuse code ramuse1 code1 journal raakatu ramuse code journal bedlam ramuse code journal xenos ramuse code section1 section2 section3 section4 section5 section6 section7 section8 section9 ssvdobjs usvdobjs journal virus morris worm 1 journal stoned journal tools blend blend zip journal defender ram use fixed bank d000 ffff subroutines defender ram use 20 word 21 byte 22 word 24 byte 25 byte 26 byte 27 byte 28 word 2a word 2b byte 2c word 2e word 30 word 32 word 34 word 31 byte 34 byte 36 byte current page for addresses c000 cfff 37 byte 38 byte 39 byte 3a byte only known instance of use is at d045 in fixed rom bank does not appear to have a use 3d word address of position in jump table to go in fixed rom bank 3f word address to return to when called subroutine completes processing 4c byte 4e word 50 byte 51 byte 52 word 54 word 56 word 58 byte 59 word 5d byte 5f word the address of the 1st link in the event chain 61 word current link in chain beginning at af1b 63 word current link in event chain beginning at a05f 65 word 67 word 69 word current link in chain beginning at af2a 6b word 6d word 6f byte 70 byte 71 byte 73 byte 74 byte 77 word stack pointer storage no maybe more like a scratch pad i think 78 byte scratch pad 79 byte 7a byte 7b byte 7c byte 7d byte 7e byte only found in code w o any identified entry points 7f byte 80 byte 81 byte 82 word 84 word 86 word 88 word 8a byte 8b byte 8c byte 8d word 8f byte 90 word 92 byte 93 byte 94 byte 95 word 99 byte 9a byte 9b word 9d word 9f word a1 word a2 byte a3 byte a4 word a6 word a8 word ab byte ac byte ad byte ae byte af byte b0 word b2 byte b3 byte b4 byte b5 byte b7 byte ba byte bb word bd word be byte bf word c0 byte c1 word c2 byte c3 word c4 byte c5 word c7 word c8 word c9 byte ca word cc word ce word cf byte d0 word d1 byte d2 word d3 byte d4 byte d5 byte d6 word d7 byte d8 word d9 byte da word dc word df byte e0 byte e1 byte fa byte fb byte fc byte fd byte fe byte ff byte from mame rom_region 0x19000 maincpu 0 rom_load defend 1 0x0d000 0x0800 crc c3e52d7e sha1 a57f5278ffe44248fc73f9925d107f4024ad981a rom_load defend 4 0x0d800 0x0800 crc 9a72348b sha1 ed6ce796702ff32209ced3cb1ba3837dbafa526f rom_load defend 2 0x0e000 0x1000 crc 89b75984 sha1 a9481478da38f99efb67f0ecf82d084e14b93b42 rom_load defend 3 0x0f000 0x1000 crc 94f51e9b sha1 a24cfc55de56a72758c76fe2a55f1ec6c353b16f 1 rom_load defend 9 0x10000 0x0800 crc 6870e8a5 sha1 67ccc194b1753a18af0c85f5e603355549c4f727 rom_load defend 12 0x10800 0x0800 crc f1f88938 sha1 26e48dfeefa0766837b1e762695b9532dbc8bc5e 2 rom_load defend 8 0x11000 0x0800 crc b649e306 sha1 9d7bc3c89e5a53c575946f06702c722b864b1ff0 rom_load defend 11 0x11800 0x0800 crc 9deaf6d9 sha1 59b018ba0f3fe6eadfd387dc180ac281460358bc 3 rom_load defend 7 0x12000 0x0800 crc 339e092e sha1 2f89951dbe55d80df43df8dcf497171f73e726d3 rom_load defend 10 0x12800 0x0800 crc a543b167 sha1 9292b94b0d74e57e03aada4852ad1997c34122ff 7 rom_load defend 6 0x16000 0x0800 crc 65f4efd1 sha1 a960fd1559ed74b81deba434391e49fc6ec389ca fixed rom always available in memory map fixed bank d000 ffff subroutines d013 the same as the routine at d015 except the source of the value in the x register is provided at an address at 6 x with this entry point called from fixed rom ebf1 edc1 f40f f418 d015 called from fixed rom d00c d08f f3d8 bank 1 rom c472 d03a called from fixed rom d044 d05b d0b3 d0ef edd5 d03e this is one entry point for a subroutine that fits into the address space from d03e to d07b the other much more heavily used entry point is at d055 this one is used only once d055 is used 42 times that i know about the two subroutines converge at address d066 and continue to the exit point at d07a called from fixed rom f2ae d055 this is the main entry point for a subroutine that fits into the address space from d03e to d07b the other entry point which is only used once as far as i am aware is at d03e d055 is used 42 times that i know about the two subroutines converge at address d066 and continue to the exit point at d07a called from fixed rom d7ac d8c1 d94a d9d2 d9da d9e2 d9ea d9f2 d9fa dc23 e843 e88b ea85 ebb2 edae ede5 ef1e efac f1f4 f27e bank 1 rom c027 c0b2 c0ba c0c2 c279 c2e3 c363 c374 c37c c384 c38c c394 c42e c58a c690 c698 c725 c735 c7c9 c7d9 c829 c861 d07c called from fixed rom d86c d921 daba dcf9 bank 1 rom c006 c10e c266 c351 c677 d095 called from fixed rom dbe5 e975 ea8a ebb7 ee65 ee73 ef23 efb1 f2c1 d0ad called from fixed rom d095 dc77 bank 1 rom c397 c3bc c3e1 c4b5 c54f c5a1 d0c7 called from fixed rom f3fb f41d bank 1 rom c47a c546 c59e d0f2 called from fixed rom e526 e93a d21f looks like a subroutine on its face i have two problems with it that make me think otherwise however 1 i can t find where it is ever called it may be in a jump table that i have not yet discovered though 2 it uses the s register to pick up data in 4 byte packs which would presumably be ok if you disabled the interrupts first this routine does not disable the interrupts though however it could be that the calling routine does this so it is unnecessary to do it here in either case it sounds like a recipe for disaster to me d260 i can t find where this is ever called from anywhere however it does seem to be a clear routine for a structure such as the one that appears to be created by d21f unfortunately i can t find where d21f is ever called either f57b scrnblkclrp2 this looks like it will clear a block of screen memory of any size with byte granularity it sets the rom page to 2 for some reason that i haven t figured out yet on completion it restores the rom page to its previous setting entry conditions x address to begin y pointer to size of block to clear 1st byte lines to clear 2nd byte of bytes line to clear exit conditions the block is cleared called from fixed rom ffb6 d41b da81 bank 3 rom c533 f5c7 scrnblkclr this subroutine will clear a block of screen memory of any size with byte granularity it bypasses the part of scrnblkclrp2 that changes the rom page then it converges with scrnblkclrp2 at f58c because it restores the rom page this routine also must save the rom page entry conditions x address to begin y pointer to size of block to clear 1st byte lines to clear 2nd byte of bytes line to clear exit conditions the block is cleared called from fixed rom ffb9 d64d d66d d6a4 da53 f4a5 bank 1 rom c15e f5d1 vidmemclr entry conditions exit conditions called from fixed rom ffbc d75a d86f d959 bank 1 rom c043 c26c c443 c681 bank 3 rom c24a c2c6 c5e6 c7c8 ca2a bank 7 rom c7c8 f7db writeioport saves current rom page switches to i o page and writes a byte to the port specified then restores the rom page entry conditions b byte to write to port x i o port to write exit conditions no change called from bank 1 rom c068 c06d c075 c07a bank 3 rom c114 c224 c36d c3ef c4f8 c506 c5f1 c5f9 c601 c609 c77c c796 c9cb ca70 ca9e cab8 cac3 caff cb13 cb1b f7f1 readioport saves current rom page switches to i o page and reads a byte from the port specified then returns the rom page to the same as it was on entry entry conditions x i o port to read exit conditions b data read from port called from bank 1 rom c312 bank 3 rom c0eb c10b c1c6 c1e2 c322 c347 c34e c42f c4c4 c4ee c55c c5a1 c5b5 c7fb c878 c9ac ca18 ca22 ca76 f813 sramread performs the actual reading of the nybbles out of the sram entry conditions x the memory location to be read exit conditions a the contents of the x and the 1 x they are each only 4 bits wide and thus are packed into a single byte in the a register x is the msnybble and 1 x is the lsnybble x memory location 2 see f822 f822 rdsrambyte saves the contents of the cxxx page before switching to the 0 or i o page calls f813 and then restores the previous contents of the cxxx page f813 is not called from any other location so if one wanted to speed things up just a bit it could be incorporated into this subroutine entry conditions x the address of the first of the two memory locations to be read exit conditions a the contents of the x and the 1 x they are each only 4 bits wide and thus are packed into a single byte in the a register x is the msnybble and 1 x is the lsnybble x memory location 2 called from fixed rom d82b d88b de83 f838 f83c ffa1 bank 1 rom c151 c332 bank 3 rom c8dd c951 c973 c991 f838 sramwordrd entry conditions x the address of the first of the two memory locations to be read exit conditions d the contents of the x 1 x 2 x and 3 x they are each only 4 bits wide and thus are packed into a single word in the d register as with the 8 bit variation the msnybble is first followed by decreasingly significant digits x memory location 4 called from fixed rom d8a4 dec5 ffa7 bank 1 rom c149 c1c7 c32d bank 3 rom c937 c963 f83a srambyterd entry conditions x the address of the first of the two memory locations to be read exit conditions b the contents of the x and the 1 x they are each only 4 bits wide and thus are packed into a single byte in the b register x is the msnybble and 1 x is the lsnybble x memory location 2 called from fixed rom d775 ffa4 bank 3 rom c101 c11a c835 c8c8 cbf2 cbf7 cc38 cc4e cc5e cc6c f842 sramwrite performs the actual writing into the sram entry conditions a byte to be written into 2 nybbles of sram x address of first most signigicant nybble exit conditions the byte is written into 2 nybbles in the sram see f84e f84e wrsrambyte entry conditions called from fixed rom d8d0 f864 f86a ffaa bank 1 rom c1b1 c1b9 bank 3 rom c120 c95b cbb5 cbc8 cc1b ccce f864 sramwordwr entry conditions called from fixed rom ffb0 bank 1 rom c1ac c1cc bank 3 rom c94e cc08 f866 srambytewr entry conditions called from fixed rom ffad bank 3 rom c84b c854 cb9c fc60 see fc60 this routine consists of a single instruction jmp fc69 further discussion will be found in the fc69 subroutine entry fc63 see fccc this routine consists of a single instruction jmp fccc further discussion will be found in the fccc subroutine entry fc66 see fd2d this routine consists of a single instruction jmp fd2d further discussion will be found in the fd2d subroutine entry fc69 all known calls to this routine are made via a jump to fc60 the reasoning behind this remains a mystery to me called from fixed rom e9a1 eab1 eb6c ef5d efe6 br bank 1 rom c404 c574 c5bc c79b fccc all known calls to this rountine are made via a jump to fc63 called from fixed rom e541 ec08 ee88 ee20 f438 fd2d all known calls to this rountine are made via a jump to fc66 called from fixed rom e823