• Serial interrupts on Mx2 chip
    Hi This question is about serial interrupts on the 8051 based extended memory chip (P87C51Mx2). The transmit interrupt TI_0 is supposed to be set when a character is written to S0BUF. This is not...
  • uVision Debugger problem with MX2?
    I'm developing for the Philip 8xC51MB2 using the latest Keil tools but when I use the uVision debugger (simulator) I get the following problem:- In "Extended Call Return Mode" ECRM = 1, the simulator...
  • Off-chip code memory location problems on Philips MX2
    I'm currently doing a project on an MX2 based system and I'm having trouble locating my code to the correct location. My memory map is as follows: 512k off-chip RAM at X:000000 64k on-chip ROM...
  • 80C51 with extended memory(MX2 series) boot.
    Hi, Does the 8051 based Mx2 microcontroller have a possibility to distinguish between a warm boot-up(5V dip) and a cold boot-up(power-on)? If yes, can somebody please tell me which register has this...
  • Nordic chip, what number are the interrupts?
    Hi! I'm new to 8051 controllers and are now using the nRF24LE1 for a school project. I am used to the AVR architecture and writing interrupts like "ISR_interrupt_vector()" but I can see that...