*** M E M O R U M ***

Free MTXplus+ ICs

I'm in the process of getting enough ICs together to build 10 x MTXplus+ units.. all going well this shouldn't take to long and will keep the cost of building your own MTXplus+ computer down to a reasonable price. The ICs will be send to Dave's house. I'm sure Dave will post costing for PCBs + Edge Connectors etc. on the forum as well as build details when available.

MTX Plus >> ICs .. : prices for Genuine parts

Z84C0020PEC..........DIP40.......1pcs.......$2.85 each
Z84C3010PEC..........DIP28.......1pcs.......$2.0 each
Z84C4010PEC..........DIP40.......1pcs........$2.0 each
512K SRAM.............DIP32.......1pcs........$3.50 each
27C1001-45............DIP32.......1pcs.......$1.0 each
DS12887................DIP.........1pcs........$1.0 each
MAX705.................DIP.........1pcs........$0.20 each
EPM7128SLC84-10.... PLCC84....2pcs.......$2.0 each ($4.0)
V9958 Video IC....... DIP64.......1pcs.......$7.50 each
D41464-10............. DIP.........6pcs........$0.50 each ($3.0)
GAL22V10C-10........ DIP.........2pcs........$1.0 each ($2.0)
SN76489 PSG.......... DIP.........1pcs........$0.50 each
CXA1645............... DIP.........1pcs........$1.0 each
uPD82C55..............DIP..........1pcs .......$1.20 each
MAX232................ DIP..........1pcs .......$0.25 each

About $35 for all the ICs needed.

What I could really, really, really do with, is a TARDIS.

1. Would save me ending up in Cardiff when that's not where I want to be (see this thread) I hope (assuming I don't end up with The Doctor's dodgy one...)
2. And I could use it so that I had more tinker time with MTX machines

Mark

Lez, can you get any dual port RAM chips like IDT7130LA35P or IDT7130LA55P (faster speeds okay, but not slower speeds) for a reasonable price?

Mark

1024MAK wrote:Lez, can you get any dual port RAM chips like IDT7130LA35P or IDT7130LA55P (faster speeds okay, but not slower speeds) for a reasonable price?

Mark

I'll ask around... what speeds are accepatble ? 20ns,25ns,35ns,55ns,100ns ???

My email address is lezanderson@gmail.com if you want to contact me direct

Prefer 55ns or quicker. Does not have to be from the same manufacturer, just have the same functionality (dual port RAM).

Mark

1024MAK wrote:Lez, can you get any dual port RAM chips like IDT7130LA35P or IDT7130LA55P (faster speeds okay, but not slower speeds) for a reasonable price?

Mark

I'm assuming you want these in DIP ??

I can get CY7C006xx,CY7C007xx & IDT7006xx,IDT7007xx,IDT7008xx in PLCC

CY7C006,IDT7006 (16kx8bit Dual Port SRAM) PLCC $5.0 each
CY7C007,IDT7007 (32x8bit Dual Port SRAM) PLCC $12.50 each
IDT7008 (64kx8bit Dual Port SRAM) PLCC $16.50 each

1024MAK wrote:Prefer 55ns or quicker. Does not have to be from the same manufacturer, just have the same functionality (dual port RAM).

Mark

Funkward-tech can source them :

IDT7130LA55P ......... $1.5/EA

Got some updated prices from Funkward-tech (prices are each , without shipping)

** Note some prices are cheaper on ebay.com, So shop around before buying !


Z84C0020PEC CPU DIP40 $1.6
Z84C0020VEC CPU PLCC44 $1.6
Z84C3010PEC Z80 CTC 10MHz $1.6
Z84C10xxPEC DIP Z80 DMA never remember what Z80-DMA ,shot me a part number?
Z84C20xxPEC DIP Z80 PIO $1.6
Z84C30xxPEC DIP Z80 CTC $1.6
Z84C40xxPEC DIP Z80 SIO $2.0
R65C02 6502 CPU DIP $2.5
W65C02 6502 CPU DIP $3.0 rare,I don’t have much left (60-70pcs)
W65C816 6502 CPU DIP $5.0 rare,I don’t have much left (30-45pcs)
6809 CPU DIP $1.6
HD63x09 CPU DIP $1.6
HD64180 DIP64 $2.0
68008Pxx CPU DIP48 $2.0
68008FNxx CPU PLCC52 $2.0
68000Pxx CPU 68000 DIP64 $2.0
68000FNxx CPU PLCC68 $2.5
TMS9900xx CPU DIP64 $3.0
TMS9995xx CPU DIP40 $4.0
TMS99105 CPU DIP40 no source
TMS99110 CPU DIP40 no source



SRAMs

512k x 8bit SRAM DIP32 (HM628512,KM684000, etc) $4.5
128k x 8bit SRAM DIP32 $1.2
64K SRAM UM61512 etc $2.0
32K SRAM (HM62256, UM61256 etc) $1.6
8K SRAM HM6264 etc $1.5


EPROM/EEPROMs
EPROM / EEPROM
512K x 8 bit DIP32 $2.5 / $1.6
128k x 8 bit DIP32 $1.25 / $1.0
64K x 8 bit DIP28 $1.0 / $1.0
32K x 8 bit DIP28 $1.0 / $1.0
8k x 8 bit DIP $1.5 / $1.0



Video Processors

V9938 DIP64 $5.5
V9958 DIP64 $10 don’t have much left , 40-50pcs
TMS9929 DIP40 $2.3
TMS9918 DIP40 $2.5
V9990 no source
V6636 no source since last year
D72020C-8 $3.0 D7220D (NOS CERAMIC gold leads) $15 ,around 30pcs in stock



CPLDs/PLDs/GALs

GAL22V10 DIP $1.0
GAL16V8 DIP $0.6
EPM7128SLC84 PLCC $2.5
EPM7064 PLCC $2.0
EPM7032 PLCC $2.0
EPM7160SLC84 $8.0
EPM9320LC84 $15.5/EA this is expensive


Sound Chips

SN76489 DIP $0.8
SAA1099 DIP $1.0
YM2149 DIP $2.0
AY-3-89xx DIP $2.0 8910 is lacking of goods,you can use YM2149F, 8912/8913 are available
YM2612 DIP $1.6 is it YM3812 ????


Miscellaneous

8255/82C55 DIP intel PIO Chip $1.5
DS12887/DS12C887 RTC DIP $2.5
CXA1145 PAL/NTSC encoder DIP $1.5
CXA1645 PAL/NTSC encoder DIP $1.5
D41464-10 DRAM DIP $1.0 also have NOS TMS4164 $1.25/ea
MAX232 RS232 Driver DIP $0.5
MAX705 IC Supervisor DIP $0.5
TIM9904A ( for TMS9900 CPU) DIP $1.0
TMS9901 DIP $3.0
TMS9902 DIP $1.5