Chr$ wrote:hand engraved ‘J3’ and next to the bottom row is ‘J4’ (whatever that may refer to?)

The QL joystick connectors are named J3 and J4.

A bit unstable at high speed. In some runs a test may report a duration of 0 or 1 ms, resulting in an inaccurate overall score:

3029



JS ROM, 4-year-old i7 PC, 'QemuFast' variant of Q-emuLator.
Standard Q-emuLator on the same machine gives 1359.

Perhaps the benchmark should run for a longer time for better accuracy? The INTMATH test only run for 3 ms?

Emulator : QPC and QEmuLator (with Minerva) on Windows, uQLx on Unix Peer QL : BBQL (Minerva) + TK2 2.34, GoldCard (v2.32) and SuperGoldCard (v2.49) equipped-QL (both incorporate TK2), QXL-II under SMSQ/E JS ROM + TK2 also seems to work, that's what I used in my test both on the BBQL (without GC) a...

The trick, I've found, to Modelsim comes when you change something in some code way down in the hierarchy => that code and everything upstream needs to be re-compiled Yes, forcing recompilation was sometimes an issue! I think the problem that got me stumped for a while was that if a module has no i...

When you get time, would you be willing to share the overall dimensions/measurements of the apertures, etc? Did you purchase a ready-made project-box, or 3D-print one yourself? It's a 3d printed box I designed. Here are the STL files: QLUB_Box.zip It's a bit of a tight squeeze, and may or may not w...

I've moved the circuit from the breadboard to a permanent circuit and box:

Funny, I use Test909, too :-) It's a nice benchmark, at least on the QL. Too short for emulators, though. Might be difficult to debug, but since I tried the Xilinx ISE debugging environment I view Intel's SignalTap with much more appreciation, it's a 1000 times better. As someone new to FPGA, I fou...

I've replaced the timing logic with what I'm implementing for Q-emuLator and it's much more accurate for Mister, too: _DSC0091.jpg However, there must be an issue in IPC/ZX8302 communication, I had to use a hack where I disable ROM wait states when running IPC-related code (range 2F7C - 2FAE in JS R...

I dont't see where 4 cycles are added for word-size ROM access... is that somewhere?