Search found 39 matches

by legacy
Thu Jun 07, 2018 12:59 am
Forum: For sale / Wanted
Topic: wtb: socket adaptor, M68020-PGA to M68EC020-PGA
Replies: 0
Views: 1156

wtb: socket adaptor, M68020-PGA to M68EC020-PGA

The 68020 is a 32-bit microprocessor from Motorola, released in 1984. Motorola also manufactured MC68EC020 - embedded version of the MC68020 CPU, housed in different packages than the Motorola 68020 microprocessor, but even in the case of PGA package of 114-pin PGA, MC68020/PGA is not pin-to-pin com...
by legacy
Sat May 26, 2018 10:34 pm
Forum: For sale / Wanted
Topic: wanted: SBC 68020 board
Replies: 0
Views: 1125

wanted: SBC 68020 board

I am looking for a simple SBC board with a 68020 cpu on it.
let me know if you have one for sale
thanks
by legacy
Sat May 26, 2018 1:30 pm
Forum: Hardware
Topic: M68EC020 vs M68020 ?
Replies: 6
Views: 852

Re: M68EC020 vs M68020 ?

Do you happen to know *where* I can find an adaptor 68020-PGA to 68EC020 PGA?
by legacy
Sat May 26, 2018 1:00 pm
Forum: Hardware
Topic: M68EC020 vs M68020 ?
Replies: 6
Views: 852

Re: M68EC020 vs M68020 ?

Considering that even Vcc and GND are different if you're unlucky you have now fried the 68020. Not fried, the chip is still alive and passes all the diagnostics. I put a current limiter on the CPU board. Anyway, what a stupid design of the package by Motorola, and the documentation of the Socket w...
by legacy
Sat May 26, 2018 12:29 pm
Forum: Hardware
Topic: M68EC020 vs M68020 ?
Replies: 6
Views: 852

Re: M68EC020 vs M68020 ?

frank.lukas wrote:There is a DMA Signal missing on the EC020, see the Datasheet.


The board doesn't use the DMA. It bootstraps, it loads the interrupt vector tables, and then it enters into a "monitor" loop waiting for commands from the user-serial line.

I have to check the UM deeply.
by legacy
Sat May 26, 2018 10:55 am
Forum: Hardware
Topic: M68EC020 vs M68020 ?
Replies: 6
Views: 852

M68EC020 vs M68020 ?

The M68EC020 processor has been used as the base processor in some Amiga models most notably the A1200, and the primary difference between the MC68EC020 and the MC68020 is that it has a 24bit address bus. Here I happen to have a board with an MC68EC020RC20 on the top of the socked, and I replace it ...
by legacy
Thu May 17, 2018 7:11 pm
Forum: For sale / Wanted
Topic: wanted, Ada95 compiler for SGI Irix v6.5
Replies: 0
Views: 1255

wanted, Ada95 compiler for SGI Irix v6.5

hi
In order to recompile an RTL simulator, I am looking for an Ada95 compiler for SGI Irix v6.5. Gnat might be an option if it can run on run Irix v6.5.27.

Let me know if you have something for me.

Thanks
by legacy
Thu May 17, 2018 10:29 am
Forum: For sale / Wanted
Topic: for sale, SCSI box, 4U of 3.5 inc
Replies: 0
Views: 1281

for sale, SCSI box, 4U of 3.5 inc

Hi, up for sale is an SCSI box that accepts four units of 3.5inc, 1U size (e.g. four harddrives, four Iomega Jazz, four Iomega Zip). It doesn't accept 5.25inc unit (e.g. CDROM, Tapes ...), and there are two SCSI narrow cabling, and four Centronics connectors host--cable ---- line0 ---- unit0 --- uni...
by legacy
Wed May 16, 2018 11:12 pm
Forum: For sale / Wanted
Topic: for sale, qty=16 MCM514256AZ70 ZIL Zig Zag dual in line
Replies: 0
Views: 1306

for sale, qty=16 MCM514256AZ70 ZIL Zig Zag dual in line

hi
I happen to have qty=16 of MCM514256AZ70 chip, in ZIL package.
let me know if you need by PM me.
by legacy
Wed May 16, 2018 3:00 pm
Forum: For sale / Wanted
Topic: for sale, MC68332EVS board (CPU32, 68000 enhanced)
Replies: 0
Views: 1280

for sale, MC68332EVS board (CPU32, 68000 enhanced)

Up for sale is a Motorola M68332 Board, with a manufacture date of 1989, and it comes with the condition "tested, 100% working"; there are neither damages nor scratch, and this item comes from a smoke-free home. It's loaded with ⋅ MC68332 module ⋅ extra static ram &sdot...
by legacy
Mon May 14, 2018 3:38 pm
Forum: For sale / Wanted
Topic: wanted cpu mc68020 pga/goldcap @ 25Mhz
Replies: 5
Views: 1118

Re: wanted cpu mc68020 pga/goldcap @ 25Mhz

frank.lukas wrote:I can swap my 020/25Mhz + money for a 030/50Mhz.

Tell me via PM how much money you want ?


I have already sent you a PM with my email, but there is no reply in my box :shrug:
I am going to send you a new PM!
by legacy
Mon May 14, 2018 1:55 pm
Forum: For sale / Wanted
Topic: wanted cpu mc68020 pga/goldcap @ 25Mhz
Replies: 5
Views: 1118

Re: wanted cpu mc68020 pga/goldcap @ 25Mhz

sent a PM
by legacy
Fri May 11, 2018 6:09 pm
Forum: For sale / Wanted
Topic: wanted cpu mc68020 pga/goldcap @ 25Mhz
Replies: 5
Views: 1118

wanted cpu mc68020 pga/goldcap @ 25Mhz

hi
I am looking for a mc68020 pga/goldcap @ 25Mhz
I can swap for a mc68030 pga/goldcap @ 50Mhz (revB) + money difference, or pay for the item.

contact me by PM
by legacy
Fri May 11, 2018 6:06 pm
Forum: For sale / Wanted
Topic: wanted MC68881/MC68882: floating point coprocessor user's manual
Replies: 0
Views: 1375

wanted MC68881/MC68882: floating point coprocessor user's manual

  • MC68881/MC68882: floating point coprocessor user's manual

I know there are pdf around, but I prefer a paper copy.
If you have one for sale, please contact me by PM.
Thanks.
by legacy
Fri May 11, 2018 3:19 pm
Forum: Coding
Topic: MC68882, I am looking for examples
Replies: 0
Views: 1572

MC68882, I am looking for examples

hi
I am playing with an MC68332 board, it comes with an MC68882RC25 FPU on it, and I'd like to experiment a few of assembly for the floating point. Unfortunately, I am not able to find examples.

Thanks in advance.
by legacy
Sun Mar 01, 2015 5:29 pm
Forum: Coding
Topic: i am looking for a pretty and well written B*tree in C
Replies: 0
Views: 2809

i am looking for a pretty and well written B*tree in C

hi guys
i am looking for a pretty and well written ansi C implementation of B*tree
do you know where can i find it ?
by legacy
Wed Feb 04, 2015 8:06 pm
Forum: Coding
Topic: gdb-stub/m68k
Replies: 21
Views: 5725

Re: gdb-stub/m68k

personally i will see the gdb-stub for serial port, my first application will be on a home-made board i am developing: its uart is 68681, @19200bps, pretty slow
by legacy
Tue Feb 03, 2015 5:32 pm
Forum: Coding
Topic: gdb-stub/m68k
Replies: 21
Views: 5725

Re: gdb-stub/m68k

yeah "gdb -tui" is working, too, thank you for the tips, also i have emerged (1) dev-util/ddd :mrgreen: today i have achieved more progress about the TAP, a few features have been tested, so … it may be i have the time to have a see at the gdb's sources, more specifically a look at the gdb...
by legacy
Tue Feb 03, 2015 12:44 pm
Forum: Coding
Topic: gdb-stub/m68k
Replies: 21
Views: 5725

Re: gdb-stub/m68k

thank you, i will have a see with pleasure :mrgreen: i have also find a pretty front end, ncureses based: dev-util/cgdb Homepage: http://cgdb.github.io/ Description: A curses front-end for GDB, the GNU debugger it will have a see, too, even if i will use "dev-util/ddd" as front-end for GDB...
by legacy
Mon Feb 02, 2015 11:43 pm
Forum: Coding
Topic: gdb-stub/m68k
Replies: 21
Views: 5725

Re: gdb-stub/m68k

A generic m68k stub or one for a specific m68k machine? the original gdb-stub was uart driven, so we can forget the proxy add on a minimal gdb-stub is 90% composed of C code that handles the serial protocol, the 10% of its code is assembly and it is related about the CPU: more specifically how to l...
by legacy
Mon Feb 02, 2015 4:20 pm
Forum: Coding
Topic: gdb-stub/m68k
Replies: 21
Views: 5725

Re: gdb-stub/m68k

i need sources, in order to port to my platform i have found something in the linux kernel, more specifically a pretty minimal gdb-stub for mips, most written in C, that is exactly what i need: assembly part need to be re-written for m68k in order to do thinks like - context save - context restore a...
by legacy
Fri Jan 30, 2015 1:13 pm
Forum: Hardware
Topic: toy board
Replies: 25
Views: 2904

Re: toy board

http://s18.postimg.org/65ymhjf89/eagle_grid.png see what happens: this is the SPDIP64 package opened i have simply changed the pad-style into "long pad" see the grid: it is misaligned with existing pads on with any new added pads (mine are on upper left, in squared shape) they are all mis...
by legacy
Fri Jan 30, 2015 1:03 pm
Forum: Hardware
Topic: toy board
Replies: 25
Views: 2904

Re: toy board

there is NO problem with the schematic, the problem is related ONLY to the package editor if i want to design a new package, i create/open a library, i create a package, then i open the grid-tool, selecting SIZE=1.778mm let me attach a snapshot about what i see if i do so, opening an existing package
by legacy
Fri Jan 30, 2015 12:56 pm
Forum: Hardware
Topic: toy board
Replies: 25
Views: 2904

Re: toy board

May be you could describe the steps you're using to get from schematics to board to .. issue .. could you describe your steps when you create the package ? everything else is ok for me, but … i think i do not have understood the grid so, imagine you have already create the symbol, you have saved it...
by legacy
Fri Jan 30, 2015 12:47 pm
Forum: Hardware
Topic: toy board
Replies: 25
Views: 2904

Re: toy board

What issue are you having ? no problem about creating a schematic an then the pcb, my issues are ONLY on the library, more specifically they are related to package edit i have to design many more components, e.g. the PSONE pad, the PSONE AV connector, and so on, so i MUST be able to use the package...

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