Recent content by Dinotech

Nonsense or not, but faced that about 3 days back on Mac Classic (M0420.) When boot with "Disk Tools" floppy - it ignored floppy disk (not rejecting) and boot from hard disk Mac OS, where show "Disk Tools" as option to start. But if i clear all partitions from linux for that HDD - yes, i can...

You try start with "Install" or with "Disk Tools" disk? With "Disk Tools": If computer on boot detect hard disk with Mac OS, it don't starting boot from floppy drive. It start boot from hard disk and when booted, give you option access to floppy disk. I think in Your situation: 1) computer...

I cheked RAM's - when inserting RAM modules in other (M9420) memmory extension slot, other computer normaly loading Mac Os 7.0.1 (without memory extension can't load that version), and work fine. But when inserting A0420 original RAM modules in broken Classic II - the same chckboard. So -...

Visually no damage or broken electrical paths, but this computer for me not too familar to understand where is control points to check CPU voltages, etc. Maybe someone have control point circuit? About ROM's im talking because after cleaning i made a mistike and insert it in wrong side (empty...

Some years ago (~10) my Macintosh Classic II working Ok, but now when power on - "standart" chekboard, no surprises. Computer board now is recaped, but is still checkboard on screen. When in my Classic connecting logic board from other Mac Classic - all fine, boot up and working. All voltages...

I have ZX Spectrum +2 and RS232 adapter (in picture). Adapter works, but i don't understand - how it can work in "full-duplex", because example code is only to set Basic in "RX', or to "TX" mode. Maybe someone has experience coding Basic so that the device works with this adapter as a "dumb...

Problem solved - there need be used RS-232 straight cable with all signals (DTR, CTS, RTS, etc.) not only RX/TX/GND connecting. I don't now how about USB->RS232 adapters, but with "native" computer RS232 port (with boud 9600), works great. Thanks for any ideas.

I have CBM 3032 and want to use it as dumb terminal. From other people experiments i understand, for that purposes can be used "user port" and TTL adapter to RS232 serial port. But what i don't understand - how from Commodore Basic directly send/receive data via user port, without loading any...

Here is example what i get via serial port, when SUN key is on diagnostic position. In result blinks that 2 LED's and no more any actions.

Thanks, i tried many versions of speeds/paramters -only the speed changed for "trash" on Thinkpad screen. I can't understand - why blinking "redy to swap" led.

Yes, "terminal" Thinkpad is connected to DB25 connector and RSC card is removed, so all data need go to DB25 serial A/B serial ports. But on Minicom i can see only dots like "...." when i turn on V890. After some seconds dot's stoping and onscreen is just "trash", without any changes in next...

SUN is with two CPU module and with unknown amount of RAM. Inside led's show green for these 2 modules, no trobleshout. One time system started with my mystical power button combination. How retry that? :)

Hello. I have Sun Fire V890 with history story "it should work" and without any HDD. Everithing inside doors looks Ok, but when i try to start it up system started ~2 minutes "disco" with leds and after all that halted with 2 blinking leds - "system emergency" and "ready to swap" (what need to...