Instead, an ARM M4 (which has an FPU) would be a better idea as it has aģ2bit CPU, some memory and the FPU. The FPU chip would not work like the Transputer as the 6502 would have to In that case, the entire program would reside on the Transputer so the 6502ĭid not have to manage every aspect of the calculation. Radically sped up mandelbrots on the 2GS but always took 60 seconds toĭisplay b/c of the data transfer. Someone recently posted about a board they made using a Transputer chip. Yes, the data bus would be a big bottleneck. "The wastebasket is our most important design NadaNet 3.1 for Apple II parallel computing! Use double or extended precision on the FPU, with even more data to flog. Mantissas, and 40-bit FP numbers, so to be compatible, it's necessary to The IIgs's 16-bit loads and stores help, but the That matter, because all the time is spent loading and unloading the FPU In general, the problem is that lightning fast FP computation on theĬhip doesn't translate into fast FP for Applesoft, or much else, for The results makes for marginal speedup on adds and subtracts, and not But forĪn 8-bit machine, all the flogging to load operands into it and retrieve Helpful on a IIgs, where the alternative is SANE in software. The other was quite fast (68000 family FP coprocessor), and could be
#74hc165 hardware spi atmega zip
Since the 8MHz Zip Chip speeds most things up by about 5x,Īnd the FPU only speeds up floating point (and really only trigįunctions), I'd choose the Zip Chip over the FPU any day. RDY line until an operation was complete, which is incompatible with the One required that it be able to pause the 6502/65C02 by pulling on the I've used a couple of FP accelerator boards in my Apple //e, and have This chip does 32bit Float AND 32bit Integer operations. Happening, some serious acceleration/parallelization can happen there too. With this, weĬould have a competent FPU on the cheap! Also, since GS/OS development is The more functions per cardįPU cards for the Apple 2 are super rare (and expensive!).
#74hc165 hardware spi atmega full
If it can fit on the same card, why not! Our 2e'sĪnd 2gs's are typically full of cards already. If anyone actually makes a SPI/I2C interface card, please just add a socketįor this chip! Seriously. Here's one that retails (single units) for $20. Fast parallelīus anyone !?! Of course that would require several boards to add SPI and Interface, they could all be daisy chained via the SPI bus and have a VASTLYįaster way to talk to each other rather than the IEEE-488 bus. There are TONS of SPI and I2C devices and all it would take is an interface I would think that a SPI and I2C interface board could be very cool !
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