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Forum: support.Hardware 25 February 2021, 01:01
Replies: 15
Views: 1,164
Posted By thebajaguy
One of the outstanding issues we need some...

One of the outstanding issues we need some hardware logic pros on is the 68040/68060 reading the nibble bits of hardware expansion cards, particularly the Zorro II cards. Some cards don't mind the...
Forum: support.Hardware 25 February 2021, 00:49
Replies: 21
Views: 1,101
Posted By thebajaguy
If the controller activity LED is hanging on,...

If the controller activity LED is hanging on, then the SCSI bus is hanging due to a cable issue, or more than likely termination is not 'healthy'.

Some of the Series II A500 units had termination...
Forum: Hardware mods 23 February 2021, 08:58
Replies: 25
Views: 4,978
Posted By thebajaguy
Wouldn't mind Z2 compatibility to improve. Some...

Wouldn't mind Z2 compatibility to improve. Some recent research indicates z2 (slave) performance runs in the mid-2MB/sec range, and not the ~3.4MB/sec of a classic motherboard.

All the same,...
Forum: support.Hardware 23 February 2021, 08:52
Replies: 15
Views: 1,164
Posted By thebajaguy
I have an A4000T with the TekMagic (ultrasound)...

I have an A4000T with the TekMagic (ultrasound) 68060 board in it. It does get picky about expansion slots.

I am chasing a bug of possible long-standing with regards to 68040/68060 CPU bus...
Forum: support.Hardware 23 February 2021, 08:32
Replies: 8
Views: 469
Posted By thebajaguy
Any drive you connect will need the following: ...

Any drive you connect will need the following:

Must be compatible with SE (Single Ended) SCSI. LVD/SE drives exist, and some may need a jumper set to support.

SCA drives need an adapter, and...
Forum: support.Hardware 23 February 2021, 08:03
Replies: 1
Views: 255
Posted By thebajaguy
Pin 61 on the 68030 is _Reset. You can confirm...

Pin 61 on the 68030 is _Reset. You can confirm with a Motorola 68030 document.

Try also the 'German A2000' mode where you pull the 68000 CPU out, and set J11. Normally, the board takes control...
Forum: Amiga scene 23 February 2021, 02:27
Replies: 1,103
Views: 203,302
Posted By thebajaguy
Yes - There will be a new Kickstart ROM in the...

Yes - There will be a new Kickstart ROM in the eventual release.

And no - just like 3.1.4 - You will have the option to make use of an older ROM at the expense of consuming additional RAM for the...
Forum: Hardware mods 10 June 2019, 23:04
Replies: 66
Views: 30,106
Posted By thebajaguy
My only query/heads up is to be careful of...

My only query/heads up is to be careful of mapping Kickstart into the 1MB $A00000-AFFFFF space, as some 'extended' Kickstart solutions may choose to do. That range is still AutoConfig I/O space...
Forum: Coders. Asm / Hardware 24 March 2019, 18:03
Replies: 27
Views: 7,512
Posted By thebajaguy
It depends on your goal. Lean, basic...

It depends on your goal.

Lean, basic data-cache handling (all that the base Amiga OS ever needed with it's DMA and shared-memory zones) - This is a candidate for that goal.

Features-added...
Forum: support.Hardware 11 January 2019, 02:26
Replies: 18
Views: 1,461
Posted By thebajaguy
This thread is old, but having one of these...

This thread is old, but having one of these boards to tinker with, I have found that the PP&S init040 tool requires the old C= 37.4 68040.library along with it's own tool library. A newer C= or...
Forum: Amiga scene 02 October 2018, 03:10
Replies: 1,000
Views: 180,654
Posted By thebajaguy
Shady character, indeed! ;-)

Shady character, indeed! ;-)
Forum: Hardware mods 13 September 2018, 02:07
Replies: 31
Views: 9,746
Posted By thebajaguy
At that rate, let's go back to an A1000-like WCS...

At that rate, let's go back to an A1000-like WCS option with a boot strap ROM (if you don't want the stock-like releases)? That would make it easier to load the (experimental/final) ROM image from...
Forum: support.Hardware 10 September 2018, 00:09
Replies: 25
Views: 3,396
Posted By thebajaguy
@ Ross - I know it wasn't totally safe going...

@ Ross - I know it wasn't totally safe going above C7FFFF, but simply an option to get things working, and better than conflicting with legal expansion areas.

FWIW - Kickstart will auto-map any...
Forum: support.Hardware 09 September 2018, 02:55
Replies: 25
Views: 3,396
Posted By thebajaguy
Oh, and PCB routing is not my forte, either. I...

Oh, and PCB routing is not my forte, either. I wish I could dig into it.

Also, here is the (very long read - save for the morning/beverage time) detail on Zorro III, 68030/68040/68060 and the...
Forum: support.Hardware 09 September 2018, 02:47
Replies: 25
Views: 3,396
Posted By thebajaguy
My background is working for GVP Tech Support...

My background is working for GVP Tech Support back in 89-93 (I was employee #9. SCSI, RAM, serial, and accelerators was my area of expertise. I'm also a current beta tester for Amiga OS 3.1.4. I'm...
Forum: support.Hardware 07 September 2018, 18:58
Replies: 15
Views: 1,240
Posted By thebajaguy
Amiga vs other environments (like a PC) might be...

Amiga vs other environments (like a PC) might be best defined as:

BIOS - as the B implies, is a BASIC Input/Output System - not efficient, but offers the needed communications to get things...
Forum: support.Hardware 07 September 2018, 18:47
Replies: 25
Views: 3,396
Posted By thebajaguy
Also, by putting all write activity lower down at...

Also, by putting all write activity lower down at A80000-B7FFFF, one could cycle 1M Kickstart in to F8/E0.

Putting your own misc code into the upper half of the F00000-F7FFFF range also gives...
Forum: support.Hardware 07 September 2018, 18:43
Replies: 25
Views: 3,396
Posted By thebajaguy
This might work with the OS up, and be friendly...

This might work with the OS up, and be friendly enough, though there is some complexity.

I would suggest staying clear of F80000 and E00000 for any writing. I think Gary may terminate writes to...
Forum: support.Hardware 21 May 2018, 04:17
Replies: 32
Views: 6,951
Posted By thebajaguy
GVP Tech Support fought with GVP Enginering & Ops...

GVP Tech Support fought with GVP Enginering & Ops regarding the terminators being soldered into the SCSI cards. Their permanent nature meant that you should (technically) only use inside or outside...
Forum: support.Hardware 21 May 2018, 03:34
Replies: 7
Views: 1,188
Posted By thebajaguy
The 'FE' parts were only EC/LC parts - Full parts...

The 'FE' parts were only EC/LC parts - Full parts never were made with that surface-mount format. The surface-mount part with more pins showed up with the mask rev that most consider the Rev 3/4. ...
Forum: Hardware mods 17 April 2018, 01:39
Replies: 8
Views: 1,952
Posted By thebajaguy
So you have an idea how the 'native' 68060 boards...

So you have an idea how the 'native' 68060 boards back in the day did it with older unmodified Kickstart (I'd not go further back than 3.1, though, for other OS reasons - others may correct me,...
Forum: support.Hardware 16 April 2018, 03:16
Replies: 83
Views: 12,189
Posted By thebajaguy
A note on the CIA test - I've had (on...

A note on the CIA test - I've had (on NTSC-clocked system) the results return FAIL on one of the timers depending on the state of the J300 jumper. I've had results on good chips report bad when to...
Forum: support.Hardware 16 April 2018, 03:10
Replies: 26
Views: 2,756
Posted By thebajaguy
27C128 is a 16K EPROM. It will therefore appear...

27C128 is a 16K EPROM. It will therefore appear in the first 16K of address space. There is no harm in trying (otherwise pin compatible), but my hazy memory is pretty sure it won't work (no boot...
Forum: support.Hardware 15 April 2018, 18:13
Replies: 24
Views: 3,703
Posted By thebajaguy
I was USA-based, and out of the GVP Tech Support...

I was USA-based, and out of the GVP Tech Support business by March 1993 for the first round of 'thinning the ranks'. Oktagon and the others were from across the puddle, and we tended not to...
Forum: support.Hardware 15 April 2018, 17:44
Replies: 26
Views: 2,756
Posted By thebajaguy
The jumper/memory answer is this: Original...

The jumper/memory answer is this:

Original HC8 units supported only 1Mbx8 (or 9) SIMMs in pairs for the common 2-4-6-8MB settings.

Boards that gained the U8 74F244 buffer chip gained support...
Forum: support.Hardware 06 April 2018, 02:26
Replies: 24
Views: 3,703
Posted By thebajaguy
On the hardware side, the A500/1000 86-pin edge...

On the hardware side, the A500/1000 86-pin edge expansion connectors Config-out signals are grounded, making them auto-config enable signaled to what is connected. The 86-pin CPU slot of the A2000...
Forum: support.Hardware 06 April 2018, 02:11
Replies: 24
Views: 3,703
Posted By thebajaguy
A tip of the hat to Daedalus on the AutoConfig...

A tip of the hat to Daedalus on the AutoConfig explanation. Detailed enough for most to understand, and for the most part, accurate. I did have two items I thought weren't quite right.

As far as...
Forum: Hardware mods 27 March 2018, 13:12
Replies: 88
Views: 18,204
Posted By thebajaguy
Very nice work. There are plenty of talented...

Very nice work. There are plenty of talented repair peeps all over cursing the rotted A4000D motherboards they get in, with pads, traces, and VIAs eaten away, and hours lost trying to repair them. ...
Forum: support.Hardware 26 February 2018, 11:12
Replies: 154
Views: 30,244
Posted By thebajaguy
For the Guru at power on, i'm wondering if it's...

For the Guru at power on, i'm wondering if it's possibly a board get-ready race condition, or an interaction with the boot ROMs. Also, I've never investigated the C= early boot ROMs on the A2630,...
Forum: support.Hardware 26 February 2018, 10:53
Replies: 15
Views: 3,525
Posted By thebajaguy
I"m in the process of building a new batch of the...

I"m in the process of building a new batch of the GuruROM kits with the SpeedGeek adapter and v6.16 ROM. The pre-order thread is over in Amibay, along with a lot of information. For the quick...
Forum: request.Other 01 October 2017, 04:07
Replies: 4
Views: 3,974
Posted By thebajaguy
Late to the party (only 4+yrs) but...<br /> <br...

Late to the party (only 4+yrs) but...<br />
<br />
<br />
NETIO - Network Throughput Benchmark, Version 1.32<br />
(C) 1997-2012 Kai Uwe Rommel<br />
<br />
TCP connection established.<br />...
Forum: News 14 September 2017, 01:42
Replies: 38
Views: 11,023
Posted By thebajaguy
I recall Bernoulli SCSI removable drives having...

I recall Bernoulli SCSI removable drives having 256-byte sectors. I remember the original GVP scsidev.device 'Advanced Autoboot v2.2' ROMs being the ones needed to deal with it until later...
Forum: support.Hardware 10 September 2017, 21:46
Replies: 7
Views: 933
Posted By thebajaguy
Second pic is a GVP Series II HC8. Memory...

Second pic is a GVP Series II HC8. Memory populates from the front edge of the card in pairs of 1MBx8 SIMMs. Jumper settings on all revision cards are identical, with 0/2/4/6/8MB settings (&amp; all...
Forum: Amiga scene 10 September 2017, 21:18
Replies: 6
Views: 2,452
Posted By thebajaguy
I have had some of the best performance off the...

I have had some of the best performance off the ARC760-B - based Aztec Monster series, both CF and SATA. I have one of the above boards, and I had less than stellar success with it on WDC33C93A SCSI...
Forum: support.Hardware 05 August 2017, 23:23
Replies: 9
Views: 1,096
Posted By thebajaguy
I've got a Haydra AmigaNet card of the Coax/AUI...

I've got a Haydra AmigaNet card of the Coax/AUI interface type running the sana2 standard driver, and the available AmiTCP stack in an A4000T/060 I have, and it's stable. This was from the 1991...
Forum: Hardware mods 27 July 2017, 01:23
Replies: 257
Views: 36,371
Posted By thebajaguy
I'm willing to buy 10 connectors.

I'm willing to buy 10 connectors.
Forum: Hardware pics 27 July 2017, 00:57
Replies: 12
Views: 7,712
Posted By thebajaguy
Seems to have chip production dates between '86...

Seems to have chip production dates between '86 and '87. They are likely leftover Denise and 8520 ceramic chips from the A1000 production bin. Agnus is 512K made May '87. Gary is the Toshiba-made...
Forum: Hardware mods 20 July 2017, 00:41
Replies: 257
Views: 36,371
Posted By thebajaguy
Nice work John. Step one is to put the known...

Nice work John. Step one is to put the known working mods into play. Want list is round two, wish list comes after that...

I personally want the 68060 F00000 ROM code to fix the FPU...
Forum: support.Hardware 22 May 2017, 19:10
Replies: 5
Views: 1,163
Posted By thebajaguy
I have a few oscillators on the way, 60ns 4MB...

I have a few oscillators on the way, 60ns 4MB DRAM modules already in it, and hope to try an 060 adapter soon. I'm using some ROMTag functions to boot, tag the RAM, and reboot, and get many OS...
Forum: support.Hardware 07 May 2017, 23:33
Replies: 5
Views: 1,163
Posted By thebajaguy
I have this board, and I'll be poking at...

I have this board, and I'll be poking at overclocking and other upgrades in the next few months. One thing that strikes me as confusing is how they fragment the memory space when pushing some of the...
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