got it. thanks. makes more sense, now. Thanks, Tyler Littlefield Web: tysdomain.com email: tyler@xxxxxxxxxxxxx My programs don't have bugs, they're called randomly added features. ----- Original Message ----- From: tribble To: programmingblind@xxxxxxxxxxxxx Sent: Saturday, April 11, 2009 12:47 PM Subject: Re: bits question not necessarily -- remember the lowest order bit is 0, so if you want the 8th bit from the right, it will be numbered 7. --le ----- Original Message ----- From: Tyler Littlefield To: programmingblind@xxxxxxxxxxxxx Sent: Saturday, April 11, 2009 1:01 PM Subject: Re: bits question hmm, correction; I should've used i|=0xf<<9, not 12. then 13 to set the high nibble. Thanks, Tyler Littlefield Web: tysdomain.com email: tyler@xxxxxxxxxxxxx My programs don't have bugs, they're called randomly added features. ----- Original Message ----- From: Tyler Littlefield To: programmingblind@xxxxxxxxxxxxx Sent: Saturday, April 11, 2009 11:59 AM Subject: Re: bits question awesome, thanks. I'm playing around with the emulator, and was working on getting background color set up. so, I have bits 9-12, so I could do something like: short i; i<<8=(char)65; i|=0xf<<12; which would set the low nibble of the high byte to 0xf. (I think)... Thanks, Tyler Littlefield Web: tysdomain.com email: tyler@xxxxxxxxxxxxx My programs don't have bugs, they're called randomly added features. ----- Original Message ----- From: tribble To: programmingblind@xxxxxxxxxxxxx Sent: Saturday, April 11, 2009 11:53 AM Subject: Re: bits question Hi Tyler -- Sounds like what you need is shift and bitwise operations on the word. Suppose wd is the word. To get to the upper 4 bits, shift left and use bitwise ops as follows: If 15-12 is the nibble you are using, and if x has the bit pattern you want in the top nibble, wd |= (x<<12); This will set all the bits that are set in x, and leave the other bits as they were in wd. To clear bits specified in x, do this: wd &= ~(x<<12); To completely clear the nibblein wd , just do wd &=~(0xF<<12); HTH -- just play around and it will become easier. --le ----- Original Message ----- From: Tyler Littlefield To: programmingblind@xxxxxxxxxxxxx Sent: Saturday, April 11, 2009 10:54 AM Subject: bits question Hello list, I've got a quick question. I have a short, (16 bits) and need to set the upper 8 bits. I have 1-F which I need to use, and I need to set them in nibbles. so it'd look something like 0x00F1 or what ever I used for the last bit. any ideas on how to do this would be great. Thanks, Tyler Littlefield Web: tysdomain.com email: tyler@xxxxxxxxxxxxx My programs don't have bugs, they're called randomly added features.