Recent content by Trianon

Reading the "Guide_to_Macintosh_Family_Hardware_2nd_Edition_1990" I found some interesting info : 1. The /W/REQA signal from the SCC (only option for DMA) on the Plus, SE and SE/30 goes to PA7 of the VIA chip, So DMA is not possible on the old Macs. Only on the IIfx they go to the IOP...

Thanks for the link, I was wondering how to set the external clock option and found something in that thread. It's input only (differential buffer in-between), the signal also need a boost to be used by multiple other Macs. I would go for 1 external 1MHz clock and a good driver chip, it...

I know the AM85C80 SCC+SCSI chip also supports DMA for the SCC (and the SCSI), but this signal runs only to the GLUE logic VYI6508-2 gate array. Is there any documentation available about this chip how to program it please ?

I was reading some articles about ADB and it always says when you insert a device into a running mac you can destroy it ??? Only detail I found was a soldered fuse on the mainboard , can anybody confirm this, experience ? I would use an external power supply so this is no issue. On your...

Good news, works fine between the new LC475 and the Performa 5300. Now I have working system to measure on with the logic analyzer. My first ideas : - it's slow to todays standards, but for the 90 with only small files and minimal extra HW needed I would have loved it. - Also the slave...

Thanks for the doc. Some 30 years ago my jobs was to created CPU boards with the Motorola 68360, it's a 32 bit communication processor with 4 SCC onboard that support AppleTalk. I kept the original ceramic parts used for the development up to now, because I always wanted to build 'something'...

I found a video of "Adrian Basement" on Youtube where he also has the same issue is I have, but with the full PhoneNet network setup. He connected 2 Macs, made the correct setup but did not see the other computer in the panel as I do. He then makes a jump in the video where it works and says he...

I have both, and found this out the hard way that both are not the same. I got one Apple (cross) cable when buying the 6300 so I made a serial connection with Zterm between 2 machines, worked file. Took an USB to RS232 adaptor for my Windows laptop and swapped out the RS232 for RS422 driver...

My main goal is to write a "sceen-saver" program the runs on multiple Macs in parallel, showing a Amiga ball (or whatever) bouncing over all the screens. AppleTalk could be a solution to communicate to each mac where the ball will go next.

Thanks for the confirmation, I will have a good look at youtube how it's done as I know the HW is good (works with ZTerminal). Up to know I was not able to see the other computer in the list of AppleTalk control panel. Br, Steve

I opened up all 3 devices today (unfortunately the seller of the classics tried to power them up already ) and found some good and bad : One classic looked good no damage found, needs clean and recapping. Second classic has ugly battery damage, part of the metal is damaged and part of the...

Hi Tashtari, I think I'm in a similar situation as you where, I would also like to control my collection of Macintoshes from one single keyboard & mouse. But then also have the option to display everything on a single LCD monitor ... I got myself a second hand 8 inputs KVM for PCs with DB15...

Hi all, Can you connect 2 macs on an AppleTalk network with only a serial cable (as for a printer) or do you always need to the interface boxes ? I searched the internet and it suggest it would be possible, but not working for me. I do think it should not work from what I read in the specs...

Hi all, Got the LC 475 yesterday, 36MB ram should be enough, but only has 512kB VRAM, maybe will order the upgrade once back in stock. This will be my main development machine, a BlueSCSI will help to keep the noise down while having CD-rom support (iso file). I did run some benchmarks and...

The 630 has one advantage in it supports the COM slot, so I could add cheap(er) 10/100MB card to it. I found here : https://shop.onegeekarmy.eu/index.php/product/comm-slot-ii-10-100-ethernet-card. But then it's not in the supported list ... Don't know if there are any project on home build...