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Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc. There is an interesting…
... data), is fairly small, and keeps the floating point operands in registers ... set is the primary floating point accumulator and the main set contains ... . Genmath requires a floating point accumulator in memory and keeps another operand ... -
Publishers logos and biosAs we are getting more development done, we are looking at extra details not currently available, so will be creating new categories asking for submi…
... these is for publisher logos and biographies.
... format with a transparant background, and [s]200x200px[/s] [ ...
CodeMasters
Bubble Bus Software
Anirog
... /> Terminal Software (long strip and short style logos)
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CPU speed controller (SLOMO) + K-MOUSE + JOYSTICK + ZX BUS EXPANSION (3x throught zx bus)Anyone is interested of this hardware ? [img]http://velesoft.speccy.cz/other/km2016lp3d1.jpg[/img] It's horizontal version of K-MOUSE interface(p…
... + joystick interface + zx bus expansion (3x throught zx bus) + external reset button ... for version without joystick connector and without SLOMO)
For order ... -
TIL: something about floating point numbersHere's something that had me scratching my head for a while until I figured out what was going on. In a BASIC program, floating point numbers are …
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In a BASIC program, floating point numbers are stored unsigned ... />
then the 5-byte floating point representation after the 14 ... if you RUN this program and then inspect the variables area ... -
R registerI'm cross-posting this as a spin-off of a [url="http://www.worldofspectrum.org/forums/discussion/52748/zx-spectrum-cartridges/p2"]thread in "Hardware…
... portion of the address bus along with a refresh ... the CPU is decoding and executing the fetched instruction ... all addresses are refreshed equally and in time.
timing, so it doesn't ... dumped on the address bus lower byte, just after ... -
DIVMMC / DIVIDE and combination with next interfaces (compatibility)Very often we can read about problems of ports collision or incompatibility between devices. Here is way for identify devices compatible/usable with …
... ports table select your DIVIDE and erase from table all ... other devices with external memory and also other IDE devices ( ... all devices without throught bus connector, because DIVIDE and DIVMMC is possible ... with DIVIDE/DIVMMC to ZX bus and verify if are I/O ... -
128K memory bank selection to avoid contention issuesI'm currently developing a game and I'm trying to get my head around the memory contention issues of the various 128K/+2/+2A/+3 spectrum models in or…
... and I'm trying to get my head around the memory contention ... I've searched the forums and read the various docs that ... for access to the data and the ULA has priority. ... what is the cause of contention for banks 1,3,4 ... downs due to this apparent contention issue. -
Numeric arrays: floating point or integer?I've just started programming a game in Sinclair BASIC (see the thread 'UFO Defence Command' in game ideas, although I'm going to call it ZXCOM ;) ).…
... of the game initialisation and a 'view troopers' screen ... used up 3K - and that's without including ... names of your troopers and pilots, and numeric arrays for ... array as integers or floating point numbers? I seem ... being slower to process, and I suspect that if ... -
Memory Contention: A Hypothetical Fix?I have just had this crazy thought: If one were to wire an additional memory chip, say a 6264 8Kx8 SRAM, in parallel with the main memory so that it …
... the range starting at 16384 and ending at 24575, ensuring that ... to read from the SRAM and the Z80 reads from main ... reduce the effect of memory contention considerably. Possibly with the addition ... occur at the same time, and at the same address, that ...
