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MAME on the Spectrum?Yes, I know it's currently AY's job to make ludicrous posts (a position he's filling in very well, until TKRAP returns), but just out of interest, if…
... the +2A and +3. The CPU speed is the main problem ... the SAM hardware (slightly faster CPU, better graphics and sound). I ... need to write hand-optimised Z80 to stand a chance of ... -
Z80 vs. 8080.[QUOTE=obo]... because 8080 is pretty much just a cut down Z80.[/QUOTE] Really? So what's been cut, and why? Hang on, didn't the 808 evolve from the…
... by removing features from a Z80...
Si[/QUOTE]
CPU manufacturer will tend to hold ... -
Anyone working on a Debugger?Is anyone working on a command line debugger or even a Windowed debugger that can be sent messages? I'm after a debugger that can debugger Z80, thus…
... be to make the debugger cpu independant and allow emulators to ... different emulator cores, such as Z80, 6502, 6809, 68000 etc ... -
Anyone working on a Debugger?Is anyone working on a command line debugger or even a Windowed debugger that can be sent messages? I'm after a debugger that can debugger Z80, thus…
... tightly tied to Fuse's Z80 core (eg it just sets ... a scheme in which each CPU would have some form of ... -
Missing NemesisI was reading one of the threads the other day about over rated spectrum games and came across the suggestion that Nemesis (the space shooter known a…
... done really well on the Z80 based Speccy.
In fact ... .[/QUOTE]
Unfortunately, the CPU was about the only thing ... -
Which Speccy is the best to buy...I'd be using it for games really, and thats about it. I'd like a 128k but I seem to remember people saying 128k +2's had problems playing some games.…
... difference is the slightly faster CPU which will screw up a ... , which requires a 3.5Mhz Z80 and won't work with ... -
new spectrumI have notices all sorts of advances on the C64 sceene such as 20mhz cpus, gui`s, and IDE interfaces. are they any kind of advances in development fo…
... sense to plug a modern Z80 into the board than use ... SE called for a 100MHz Z80 clone or something, but if ... real Z80 is available it would be so much better. CPU interfacing ... -
Self Relocating CodeOn page 47 of [url]http://www.tim-mann.org/trs80/doc/ldosq1-3.txt[/url] is an article about relocating code. The documented routine that performs the…
... to make relocating code (on Z80). I made something different to ... by Atari ST (with different CPU) :D -
RealXThis may be a dumb question but will RealX ever get released?
... (because that's what the Z80 actually does), which can possibly ... memory refresh cycles of the Z80 (performed during each instruction fetch ... of the Z80, which is also the time when the CPU samples ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... ICs and it used the z80 processor itself to generate the ... hw is a substitute for cpu speed. It just so happens ... that the Spectrum's cpu power to video display size ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... some attempts to sort the Z80 vs 6502 argument out? Couldn ... both camps for their respective CPU, that does something maths intensive ... prime number. Both programs (the Z80 and 6502) would have to ... to be implemented in both CPU's programs (in fact, they ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... some attempts to sort the Z80 vs 6502 argument out? ... both camps for their respective CPU, that does something maths ... number. Both programs (the Z80 and 6502) would have to ... despite them having the same CPU.
3& ... a lot more about Z80 code than me from ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... like that before.
Z80 people walk away thinking the ... favor the 6502 or the Z80. I just think the ... write code for and the Z80 doesn't require as ... much code so the Z80 is more memory efficient ... 6809 and think it's CPU is better than either ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... are some other factors about CPU efficiency: number of registers.
Z80 shows. On 2.2 x ... exactly same compression algorithm on Z80 and 68000, and it is ... did most of job with CPU registers. -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... are some other factors about CPU efficiency: number of registers ... than clock ratio to Z80 shows. On 2.2 ... exactly same compression algorithm on Z80 and 68000, and it ...
The problem with the Z80 isn't the number of ... see how fast the Z80 could have been with ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... proven that the Spectrum's CPU is faster than that of ... , and deliberately selects the slowest Z80 routine from the thread. That ... JamesD needs help with his Z80 programming there are plenty of ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... don't recall seeing any cpu speed comparisons. However I do ... haven't seen an optimal z80 implementation of that bubble sort ... done two things to the z80 version that change slightly how ... or some background). On the z80 it's possible to do ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... it's a 6502 vs z80 or c64 vs speccy argument ... /> I think the 6502 vs Z80 speed ratio is higher than ... 't think any 8 bit CPU from the 80's would ... design issue both 6502 and Z80 versions could have the same ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... I think the 6502 vs Z80 speed ratio is higher ... have seen a really poor z80 performance as well but ... have to be exceptionally poor z80 code to achieve that. ... less flexible environment than the z80. Lots of people would ... t think any 8 bit CPU from the 80's ... -
The Only Reason Sinclair Succeeded (Provoking Controversy)Although I love my Sinclairs dearly, I think that the only reason they succeeded was because at the time most people did not know any better (factori…
... short of an eZ80 or CPU in a FPGA. I'm ... a 2.5MHz z80 to a 10Mhz z80. Clearly the latter ... .67:1 to meet the z80's performance.
... Regarding the 6502 and z80, the 6502 came out in ... the ULA is monitoring the z80 bus for memory accesses; it ... -
How are people developing?Are most coding on actual HW or under emulation, or cross developing?
... cross compilers. - Only for target CPU.
You want ... slow process, depends much from CPU architecture, target computer etc. It ... and having it compiled into Z80 assembler with the cross compiler ... to writing the program in Z80 assembler in the first ... -
How are people developing?Are most coding on actual HW or under emulation, or cross developing?
... . source for 8086 code for Z80 for instance. It would be ... which generates code for diverse CPU than runs assembler itself. ( It ... -
How are people developing?Are most coding on actual HW or under emulation, or cross developing?
... . source for 8086 code for Z80 for instance. It would be ... which generates code for diverse CPU than runs assembler itself. ( It ... -
How are people developing?Are most coding on actual HW or under emulation, or cross developing?
... . source for 8086 code for Z80 for instance. It would be ... assembler runs on a different CPU, but produces a binary that ... they were all coded in z80 assembly. Raf Cecco is one ... -
Was learning machine code a waste of time?I remember computer magazines from the mid-1980s often had features about using machine code, which I duly skipped over as it seemed totally impenetr…
... having learnt one form, say Z80 as an example, it's ... understanding of working at the CPU level.
In my ... of course I still use Z80 assembly on the Sam Coupe ... -
Was learning machine code a waste of time?I remember computer magazines from the mid-1980s often had features about using machine code, which I duly skipped over as it seemed totally impenetr…
... having learnt one form, say Z80 as an example, it's ... understanding of working at the CPU level.
In my ... of course I still use Z80 assembly on the Sam Coupe ... -
How are people developing?Are most coding on actual HW or under emulation, or cross developing?
... assembler runs on a different CPU, but produces a binary that ... you can compile it for Z80, it will be a native ... standard C++ compiler targeted to Z80, and an implementation of the ... -
Sinclair Basic Vs PascalWith the rise of the structured programming movement (Jackson et al) was it wise to put the Basic programming language into the Spectrum. By this ti…
... generated by all the free z80 compilers out there is really ... almost any compiler for any CPU.
And it takes less ... vary so much on the Z80.
I'm not saying ... -
You know how the 128K was faster than the 48K Spectrum?Regarding how the Spectrum 128K ran at 3.54 MHz rather than the 48K's 3.5MHz, was this difference enough to be an advantage? If not, then surely Sinc…
... , 4, 6, 8, ... speeds). The z80 clock, however, is derived from ... trying to say. Although the CPU could easily have been clocked ... -
You know how the 128K was faster than the 48K Spectrum?Regarding how the Spectrum 128K ran at 3.54 MHz rather than the 48K's 3.5MHz, was this difference enough to be an advantage? If not, then surely Sinc…
... trying to say. Although the CPU could easily have been clocked ... could have used an 8MHz Z80 and added a control port ...
