Technically you are correct, but I think you cannot compare the professional
product of top class technology company like Atari with amateur home made
product like this Sam Coupe 2. I think even the original Sam Coupe was
rather a home made product than a professional computer hardware on the
technology level possible in the 1980's.
-----Původní zpráva-----
From: Thomas Harte
Sent: Tuesday, April 28, 2015 1:55 PM
To: sam-users@nvg.ntnu.no
Subject: Re: Prototype of case for planed new computer SAM COUPE 2
True, but both the Lynx and the Sam came out in the same year and the Sam
was the more expensive of the two. The Lynx gets away with it, I think,
because it's pushing only an 8kb frame buffer — 160x102 in 4bpp. So divide
all your mental calculations by three.
... though, of course, I wouldn't advocate it if fun games are your real
objective.
The Lynx's design is what Needle and Mical did after the Amiga and before
the 3DO so it's from that lineage of design. The graphics hardware is like
an Amiga plus in many ways, though a 6502 was all they could fit into the
mobile transistor budget.
On 28 Apr 2015, at 07:22, Aleš Keprt <a...@keprt.cz> wrote:
AKAIK the hardware sprites are much simpler to implement. I don't know
Lynx, but the blitter like you described needs uncomparably faster
hardware than a set of hardware sprites.
A.
-----Původní zpráva----- From: Thomas Harte
Sent: Tuesday, April 28, 2015 1:12 PM
To: sam-users@nvg.ntnu.no
Subject: Re: Prototype of case for planed new computer SAM COUPE 2
I'm inclined to think the Atari Lynx is the pinnacle of '80s graphics
chipsets: just a frame buffer and a scaling blitter. No need for all the
special-case sprites/backgrounds nonsense.
On 28 Apr 2015, at 06:32, Leslie Anderson <lezander...@gmail.com> wrote:
In an ideal world you could have :
32/8 full colour hardware sprites ...16x16 or 8x8 ? with sprite collision
detection ?
Hardware scroll vertical/horizontal
Increase in Colour palette
Hardware line interrupts (programmable) to switch palette at a fixed
number of scan lines ? No need for CPU intervention.
Even a second Video processor to give superposition, Superimposed video.
This could be something like a V9938/V9958. though this obviously would
mean quite a bit of extra circuitry, but the resulting graphics would be
superb, probably surpassing a Commodore AMIGA.
Though this all boils down to someone with the time, brains and means to
make it happen !
On 28 April 2015 at 09:28, Andrew Park <alp...@ntlworld.com> wrote:
I think hardware sprites would be great, increase in colour palette
would be beneficial as long as more colours on screen at once was
introduced but given the size of the screen as standard is 24k more
colours on screen would mean more memory unless line interrupts were
used then this would have speed issues on the cpu, so how could this be
used?
From: owner-sam-us...@nvg.ntnu.no [mailto:owner-sam-us...@nvg.ntnu.no]
On Behalf Of Leszek Chmielewski
Sent: 27 April 2015 22:27
To: sam-users@nvg.ntnu.no
Subject: Re: Prototype of case for planed new computer SAM COUPE 2
I agree. The original (crowdfunding) plans for the "new" Golden ASIC's
involved hardware sprites and palette expansion to 4096, which is enough
for most needs, and this as upgrade for the original SAM 1.
LCD
On Mon, Apr 27, 2015 at 11:20 PM, Aleš Keprt <a...@keprt.cz> wrote:
I think hardware sprites would be more beneficial than so many colors.
If I look to old game cabinets from 80’s, many of them have got
excellent games with simple slow CPU’s... but always with hardware
sprites=
-----------------------------------------
Mgr. Aleš Keprt, Ph.D.
private: a...@keprt.cz, www.keprt.cz
office: Moravian University College / Moravská vysoká škola Olomouc,
ales.ke...@mvso.cz
-----------------------------------------
Mgr. Aleš Keprt, Ph.D.
private: a...@keprt.cz, www.keprt.cz
office: Moravian University College / Moravská vysoká škola Olomouc,
ales.ke...@mvso.cz