The Silabs processors would be my recommendation too. Easy to work with, built-in clock sources, good ADC and a fast CPU (few cycles per instruction) and the tools work well. I have used the C8051F930 in three recent projects and I would use it again.
The Silabs processors don't have dual DPTR as such, but the EMI0CN register (together with r0 or r1) works nicely as the second data pointer. The SDCC does not support the use of the EMI0CN + R0/R1 in its generated code, for data movement or access. For a real programmer, however, this is not a problem. Just write a function or two in embedded assembler. It is not difficult...in fact, it is fun...it is real programming! If you need any help with EMI0CN use or embedded assembler, let me know. /Joakim On 2016-07-07 19:45, Erlo Haugen wrote: > Have a look at some of these: > https://www.silabs.com/products/mcu/8-bit/Pages/8-bit-mcu-accessories.aspx > > > /Erlo > > > On 07-07-2016 01:26, Philipp Klaus Krause wrote: >> I'm looking for dev / eval boards for 8051-variants. Can anyone >> recommend good/cheap boards that fit the following criteria: >> * Enough XRAM. I'd need at least 2KB, but 5KB would be better. >> * There should be free tools to get the program onto the MCU. >> >> Ideally, I'd like to have boards for these 8051-variants: >> * Intel 8052-like >> * AMD 80C521-style dual dptr (DPL1 at 0x84, DPH1 at 0x85, DPS at 0x86.0) >> * Philips P89C51R-style dual dptr (DPS at 0xa2.0) >> >> Maybe also: >> * Siemens SAB 80C517-like (8 dptr, DPSEL at 0x92, MDU) >> * Infineon XC888-like (2 dptr, EO at 0xd0, MDU, Cordic) >> * Other 8051-variants (multi-dptr styles, possible MDU) >> >> Philipp >> >> ------------------------------------------------------------------------------ >> Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San >> Francisco, CA to explore cutting-edge tech and listen to tech luminaries >> present their vision of the future. This family event has something for >> everyone, including kids. Get more information and register today. >> http://sdm.link/attshape >> _______________________________________________ >> Sdcc-user mailing list >> Sdcc-user@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/sdcc-user >> . >> > > ------------------------------------------------------------------------------ > Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San > Francisco, CA to explore cutting-edge tech and listen to tech luminaries > present their vision of the future. This family event has something for > everyone, including kids. Get more information and register today. > http://sdm.link/attshape > _______________________________________________ > Sdcc-user mailing list > Sdcc-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sdcc-user > ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
