Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss
Homebrew ICs and Stuff...for designing a home made microcomputer
51 views
Skip to first unread message
lezan...@gmail.com
May 21, 2013, 9:57:51 AM5/21/13
to
For anyone interested in homebrew Microcomputer design..the following Chips can be easily sourced, at affordable prices.
Video:
V9958 + (D41464 DRAMs 4pcs) Enhanced TMS9918.. Gives 40x24 Text, 80 x 24 Text, Numerous Graphics modes, 256 x 192 (256 Colors), 512 x 192 (16 Colors) 32 sprites, Hardware accelerator, Line,Fill etc
V6636 + (D41464 DRAMs 2pcs+EEPROM) enhanced MC6845.. gives several text modes 40 x 25, 80 x 25 + Several Graphics modes 320 x 200 to 640 x 350 , plus 640 x 200 (16 Colors )
V9990 Enhanced V9958 giving some VGA modes ( quite expensive to buy)
EF936x Thomson Graphics Processor.. a little expensive an less common than the V9958.
Sound
SN76489.. used in quite a few old RETRO computer
SAA1099.. used in SAM COUPE
AY-3-8910.. used in Amstrad CPC amongst others
CPLD (programmable Logic )
A complete ZX Spectrum ULA (144 Macrocells) can be put onto a EPM7160SLC84 an enhanced Spectrum ULA can fit into an EPM7256 ! So it should be possible to pop an ORIC's ULA onto a CPLD at an affordable price.
W65C02s 4-14MHz can be sourced for a few dollars each..come in DIP or PLCC package.
I've sourced a lot of stuff from G&C (China) saving a lot of MONEY !!
Video:
V9958 + (D41464 DRAMs 4pcs) Enhanced TMS9918.. Gives 40x24 Text, 80 x 24 Text, Numerous Graphics modes, 256 x 192 (256 Colors), 512 x 192 (16 Colors) 32 sprites, Hardware accelerator, Line,Fill etc
V6636 + (D41464 DRAMs 2pcs+EEPROM) enhanced MC6845.. gives several text modes 40 x 25, 80 x 25 + Several Graphics modes 320 x 200 to 640 x 350 , plus 640 x 200 (16 Colors )
V9990 Enhanced V9958 giving some VGA modes ( quite expensive to buy)
EF936x Thomson Graphics Processor.. a little expensive an less common than the V9958.
Sound
SN76489.. used in quite a few old RETRO computer
SAA1099.. used in SAM COUPE
AY-3-8910.. used in Amstrad CPC amongst others
CPLD (programmable Logic )
A complete ZX Spectrum ULA (144 Macrocells) can be put onto a EPM7160SLC84 an enhanced Spectrum ULA can fit into an EPM7256 ! So it should be possible to pop an ORIC's ULA onto a CPLD at an affordable price.
W65C02s 4-14MHz can be sourced for a few dollars each..come in DIP or PLCC package.
I've sourced a lot of stuff from G&C (China) saving a lot of MONEY !!
0 new messages