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EightyOne bug?I have been using EightyOne 1.0 to test my code using a Timex display mode. The code (a UK101 emulator) was released for CSSCGC2008 a couple of weeks…
... it corrupting the screen (stack overflow problem?)
I don ... -
Betadisk shematics & 48K-CPMHi out there, can someone help me out with the shematics for the Betadisk-Interface? I built one 17 years ago, it works fine till today, but I'm to …
... ten minuts with a stack-overflow as it seems (judging by ... -
Correct flag response to BIT n,(HL) etc.When running the test program suggested by Arjun (thanks again), all intructions are passing the flag tests except the BIT n,(HL), BIT n,(IX+dis) and…
... PO flag to reflect the parity of A rather than the ... -
Frank N SteinThis is an improved bugfix for [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0001849"]Frank N Stein[/URL] as discussed recently in [URL="htt…
... few levels due to stack overflow as the machine stack eventually ... (less serious) cases of stack overflow can all be fixed by ... -
CrusoePlease add the following "known errors" description for game [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0002872"]Crusoe[/URL]: [QUOTE]Bu…
... error was the machine stack overflow, caused by indirect recursive sub ... -
Amazonia (BUGFIX)This is a bugfix for game [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0027280"]Amazonia[/URL], please add the following "known errors" des…
... cdda9e call 9edah ; increment/overflow minutes
9ecf 3e19 ... cdda9e call 9edah ; increment/overflow hours
9ed4 3e1f ... cdda9e call 9edah ; increment/overflow minutes
9ecd 3e17 ... -
Scrimpy screensHere's a question - how small a window can you get away with as a playing area for an arcade/action game before anyone notices? From the very earlie…
... more at the sides as overflow areas for the sprites, and ... -
Screen2StringFurther to writing that BASIC one-liner to redirect CAT to a string I thought that I'd do a general redirection routine for anything which normally p…
appending data while saving to tapeBefore trying to do this I just wanted to check if there's a possibility that it might actually work. I have a number of string arrays which I want t…
... jumping to finish at SA-PARITY, it pops new values for ...Chuck Norris can!Rather amusing [url=http://stackoverflow.com/questions/1732348/regex-match-open-tags-except-xhtml-self-contained-tags]post of Stack Overflow[/url] re…
... -contained-tags]post of Stack Overflow[/url] regarding parsing of HTML ...Can any C experts help me - have hit an impasseHere is an excerpt from my attempt to program a Bridge game in C. Can you spot where I'm goiing wrong? I am trying to count the points in each ha…
... a noob question to stack overflow!
[IMG]http://i1136.photobucket ...Math Quiz - MultiplicationThe topic is fast multiplication routines, from 8x8 to 32x32 and all points in between. These functions sit underneath floating point libraries, gen…
... multipliers (stuff that doesn't overflow) and unsigned below.
SpecBAS 0.802 Released!Hi folks - It's that time again when I release the latest round of features and bugfixes to SpecBAS :) New for this version are ZONEs which act ver…
... keyword which caused a stack overflow
Fixed a small annoying ...writing incrementally to tape without leadersI want to be able to write intermittently & incrementally to some sequential medium which is supported on any Spectrum (emulator, ie. tape); eg. [cod…
... missed out the flag & parity bytes and the BREAK check ...I feel they could have done this.After reading the ZX Spectrum ULA, I learned about how the ULA detects if the Z80 if going to access memory in the next cycle and stops it if the ULA…
... too often (that buffer would overflow -- it is the programmer's ...16 Bit ADD versus ADCBesides the obvious difference that one adds without carry, and the other with carry, there is a startling difference in flag effects documented in Z…
... ]P/V is set if overflow; otherwise, it is reset.[/u ...Mastering flagsI'm little lost when different flags are set/reset after logic operations, and what conditions must be met. For example, [code] ld a, MODE…
... ]
in what situation parity is set? From code around ...CAPS-SHIFT KeyCodeIs there a standard Keycode for CAPS-SHIFT Key ? Looking at the ROM documentation in the Main key table KEYTABLE_A, there is no Entry for CAPS_SHI…
...
Eventually considering logic overflow to [b]KEYTABLE_B[/b] it ...A sped up pixel-shift routine for 1-byte–wide spritesHere’s an optimized (for speed) real-time sprite shifting routine for sprites that are one byte wide. It uses no memory variables for storage of inte…
... ADD A,$20 results in overflow, we're on the next ...SpecBAS 0.900 ReleasedAgainst my better judgement, here's 0.900. It's got lots and lots new, but mostly the new shiny is the editor. You can indent your code, you can e…
... TEXT could cause a stack overflow in some circumstances
INSERT ...SpecBAS 0.914 for Windows/Linux64/OSX Released!And here's another round of bug fixes - mostly for the OSX/Linux builds, but the windows build will also benefit. Windows/Linux: https://drive.go…
... scrolling to it.
Fixed overflow in syntax checker causing compiler ...Jumbly -- God's Number?For a Rubik's Cube, God's Number (the minimum number of moves to turn any legal position into any other) is known to be 20. There's at least one onli…
... wrap option (which potentially introduces parity problems) affect it?esxDOS v0.8.8 releasedFrom: http://board.esxdos.org/viewtopic.php?id=679 [quote] lordcoxis: esxDOS v0.8.8 has been officially released. Grab it at http://www.esxdos.o…
... GO TO command
Parity check is disabled by default ... ESXDOS.CFG, which determines if parity is checked when loading .TAPs ...printing text on HP-GL plotters through RS232 on AY-3-8912Hello, i don't know, if anyone is even interested in these things. But i do. I like printers, plotters and other devices which we can connected to…
... and enable odd or even parity. Many plotters uses some of ...Zero v0.8Pigs can apparently fly because it's the v0.8 update of Zero that no one asked for but is out for public consumption anyway. Grab it [url="https:/…
... sizing issue (rich_chandler).
- Fixed parity flag being incorrectly reset during ...New discovery on Z80 interrupts.This is to announce the discovery of a new, hitherto unknown, behavior of the RETI and RETN instructions. As everyone knows, the maskable interrup…
... , which could cause a stack overflow.
Well, recently, I ...Question about CP Z80 instructionSorry if this is the wrong folder, but it seems the most appropriate. When performing a CP instruction, is the P flag set when the compared values …
The CP instructions sets the flag if theres a 2's complement overflow. The flag has multiple meanings.
Fraser.Question about CP Z80 instructionSorry if this is the wrong folder, but it seems the most appropriate. When performing a CP instruction, is the P flag set when the compared values …
... .
2's complement overflow makes my head hurt though ... 't get 2's c overflow. Is that not what we ...Question about CP Z80 instructionSorry if this is the wrong folder, but it seems the most appropriate. When performing a CP instruction, is the P flag set when the compared values …
The P/V flag is used as a overflow flag with 8bit arithmetic instructions. Also its overflow with ADC/SBC HL,BC/DE/HL/SP and NEG.
Fraser.
