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Messages - Camdenmil

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61
News / Re: ASM to arrive on TI-80 ROM 4.0 soon?
« on: September 08, 2011, 09:08:26 pm »
Wouldn't this mean all ti graphing calcs are now programmable with asm. (hopefully the nspire cx will be programmable with time)

62
TI Z80 / Re: zStart - an app that runs on ram clears
« on: September 05, 2011, 10:16:32 pm »
In the program edit list, if you press a number key to edit an archived program, it gives err:archived. You have to select with enter to edit archived programs. Don't know if this is a bug or not.

63
News / Re: ASM to arrive on TI-80 ROM 4.0 soon?
« on: September 05, 2011, 10:33:32 am »
Just like later versions of the ti 81, the ti 80 has an a spot for soldering a jack. Makes you wonder why ti put the circuitry for a link port and didn't bother putting one on the calcs.

64
News / Re: ASM to arrive on TI-80 ROM 4.0 soon?
« on: September 05, 2011, 12:04:32 am »
Hmm, that would mean that all ti graphing calcs can be programmed in asm. I wonder if the the cpu at least similar to a z80. According to datamath  the ti 80's cpu is inside an asic so who knows.

65
Axe / Re: 4x4 sprites
« on: September 04, 2011, 03:31:41 pm »
If you are drawing a tilemap, it actually might be better to do something clever by adding values and only storing once to each byte, that way you are using 768 byte store commands instead of twice as many nibble storing commands.  You could do something like:

A*256 + B -> {L6+L}

where A is the nibble of the first sprite, B is the nibble of the second sprite, and L is your offset.  Does that make kinda sense?
I thought about that way but I couldn't figure out how because I forgot about multiplying to shift. Don't you multiply by 16 to shift it 4 bits though?

66
Axe / Re: 4x4 sprites
« on: September 03, 2011, 09:17:49 pm »
So I just draw it the same way as an 8x8 tilemap except with twice as many pt- commands.

67
Axe / 4x4 sprites
« on: September 02, 2011, 06:17:30 pm »
I'm making a game that uses 4x4 sprites. Does anyone have a fast way for drawing 4x4 sprites? Right now I'm using nib{ to copy to the buffers.

68
Other Calculators / TI 84 manufacturing cost
« on: August 19, 2011, 11:45:14 pm »
I'm working on a z80 computer that will end up having specs similar to the 84. I'm using an avr for io(instead of tons of logic ics), 128k sram, 128x64 lcd (can't find a cheap 320x240 one) and all that costs about $35. That is for 11 ics. I can save $.15 if I used 64k sram. I couldn't find 1 or 2mb flash chips to compare the difference between those (It's far less than TI's $30). Is it costs $35 to make a z80 computer with discreet components, how much do you think it costs make that tiny asic. The savings are probably much less than $.15 to remove 80k from from the asic die. The $30 difference between the 84 BE and SE is 1mb flash, $30 is the difference between 1 and 32gb with flash memory every where else. How much do you think it costs TI to make an 84. I'd guess $5-$15 with the lcd being the most expensive.

69
You can try TILP but it is sometimes a PITA to get working. Never seen a new calc need an os install, maybe TI decided to save money by only flashing the boot pages.

70
TI Z80 / Re: zStart - an app that runs on ram clears
« on: August 16, 2011, 02:13:29 am »
(I didn't find this stuff because I use basic at most once every two months)
Me too, happened to use it at the right time I guess...

71
TI Z80 / Re: zStart - an app that runs on ram clears
« on: August 15, 2011, 05:21:13 pm »
The run on home option appears to break the Basic Menu( command. It always gives Label errors even if the label is valid.

EDIT:
The calculator froze when I was at the bottom of the program and selected bottom from the ON+Vars lbl menu.

72
TI Z80 / Re: TruVid - 4 level grayscale video with sound
« on: July 08, 2011, 08:52:10 am »
The epicness factor of this... *.*

73
Do you mean newer 83+'s too?

74
Mode 0 is just the 8080 compatible mode, mode 0 in hardware is much different and impossible through software on the 83+...if only we had the pinout to the asic.

75
TI Z80 / Re: zStart - an app that runs on ram clears
« on: June 28, 2011, 08:57:00 pm »
Axe allows for 3 letter labels. If I let PC>C000h would a battery pull still work?

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